Abstinence

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Abstinence is the practice of self-enforced restraint from indulging in bodily activities that are widely experienced as giving pleasure. Most frequently, the term refers to sexual abstinence, but it can also mean abstinence from alcohol, drugs, food, or other comforts.[ citation needed ]

Contents

Because the regimen is intended to be a conscious act, freely chosen to enhance life, abstinence is sometimes distinguished from the psychological mechanism of repression. The latter is an unconscious state, having unhealthy consequences.

Abstinence in religion

Abstinence may arise from an ascetic over indulgent, hasidic point of view in natural ways of procreation, present in most faiths, or from a subjective need for spiritual discipline. In its religious context, abstinence is meant to elevate the believer beyond the normal life of desire, to a chosen ideal, by following a path of renunciation.

In Judaism, Christianity and Islam, amongst others, pre-marital sex is prohibited.

Judaism

For Jews, the principal day of fast is Yom Kippur, the Day of Atonement.

Christianity

In Western Christianity, Roman Catholics abstain from meat on Ash Wednesday and on Fridays except solemnities. During the Christian season of repentance, Lent, many Lutheran Christians abstain from alcohol and meat on Fridays. [1] In the Anglican Communion, the Book of Common Prayer prescribes certain days as days for fasting and abstinence, "consisting of the 40 days of Lent, the ember days, the three rogation days (the Monday to Wednesday following the Sunday after Ascension Day), and all Fridays in the year (except Christmas Day, if it falls on a Friday)". [2] Catholics distinguish between fasting and abstinence; the former referring to the discipline of diminishing intake of bodily pleasures, and the latter signifying the discipline of completely restraining from bodily pleasures, most notably meats on Fridays (for example, there is the Traditional Catholic practice of fasting from food and liquids from midnight until the reception of Holy Communion). [3] Some Protestants, especially Methodists and Baptists, abstain from drinking alcohol and the use of tobacco; additionally, all Fridays of the year are days of fasting and abstinence from meat in Methodist Christianity (except Christmas Day, if it falls on a Friday). [4] [5] In Western Christianity, abstinence from meat on Fridays is done as a sacrifice because on Good Friday, Jesus sacrificed his flesh for humanity. [6]

In many Western Christian Churches, including those of the Catholic, Methodist and Baptist traditions, certain congregations have committed to undertaking the Daniel Fast during the whole season of Lent, in which believers practice abstinence from meat, lacticina and alcohol for the entire forty days of the liturgical season. [7] [8] [9] [10]

Orthodox Christians abstain from food and drink from midnight on the day they receive Holy Communion, and abstain from meat and dairy on Wednesdays and Fridays throughout the year, as well as during Great Lent. During Great Lent, Orthodox Christians practice sexual abstinence. [11]

The Seventh-day Adventist Church encourages the consumption of only clean meats as specified in Leviticus and forbids the consumption of alcohol, smoking, and the use of narcotics. [12]

Latter-Day Saints abstain from certain foods and drinks by combining spiritual discipline with health concerns. Mormons also fast one day a month, for both spiritual and charitable reasons (the money saved by skipping meals is donated to the needy).

Islam

For Muslims, the period of fasting lasts during the whole month of Ramadan, from dawn to dusk.

Hinduism, Jainism, Buddhism and Sikhism (Dharmic)

In India, Buddhists, Jains, Sikhs and Hindus abstain from eating meat and fish (basically, all living animals) on the grounds both of health and of reverence for all sentient forms of life. [13] [14] Total abstinence from feeding on the flesh of cows is a hallmark of Hinduism. In addition, lay and monastic Buddhists refrain from killing any living creature and from consuming intoxicants, and bhikkhus keep vows of celibacy. In Theravada Buddhism, bhikkhus also refrain from eating in the afternoon, and cannot accept money. Jains abstain from violence in any form, and will not consume living creatures or kill bugs or insects. Lord Ayappa devotees who visit the shrine, observe 41 days of fasting which includes abstinence.

Medicine

In medicine, abstinence is the discontinuation of a drug, often an addictive one. This might, in addition to craving after the drug, be expressed as withdrawal syndromes. In the Basic Text of Narcotics Anonymous, a large fellowship following the 12-steps outlined by AA, NA is outlined to be "a program of complete abstinence from all mood or mind-altering substances."[ citation needed ] This description includes alcohol and is widely known to include any kind of prescription narcotics, like pain-killers (opiates), anti-anxiety medicine (benzodiazepines) or diet pills (stimulants). The practice of abstinence is a learned behavior, and comes slowly over time - time spent listening and sharing in NA and AA meetings, behavioral health psychology group or individualized therapies, and hanging out with people in the recovery support community.

Types

Drugs

In the context of drug use, individuals may, at some point, decide to abstain from taking the drug following chronic use. Addicts engage in chronic drug use, followed by periods of abstinence, then in many cases relapse. [15] Addicts decide to abstain due to the negative consequences that are often associated with the drug. Depending on the individual, abstinence time may vary. In many cases, individuals relapse, and the cycle begins anew. There are several forms of abstinence that exist. Two common ones are forced and voluntary. Voluntary abstinence refers to an individual actively choosing to stop taking the drug. Forced abstinence occurs when an individual is removed from the drug environment. This makes them unable to have access to the drug. An example of forced abstinence is in-patient rehabilitation treatment, or incarceration. There are three main triggers of relapse: stress, drug re-exposure and drug associated cues. [15] An individual may relapse if they are presented with a stressful situation that compels them to re-administer the drug that they used to take. If the individual is in an environment where they are in contact with the drug, they may feel compelled to engage in drug-taking behaviour (for example, someone who is practicing sobriety that finds themselves in a bar and re-engages in drinking alcohol). Finally, drug associated cues can be the environment in which the person used to administer the drug, or the smell of a cigarette.[ citation needed ]

Individuals report that when engaging in abstinence, the longer they are not taking the drug, the more they crave it. [16]

Food

"Woman's Holy War. Grand Charge on the Enemy's Works". An allegorical 1874 political cartoon print by Currier and Ives, which somewhat unusually shows temperance campaigners (alcohol prohibition advocates) as virtuous armored women warriors (riding sidesaddle), wielding axes Carrie-Nation-style to destroy barrels of Beer, Whisky, Gin, Rum, Brandy, Wine and Liquors, under the banners of "In the name of God and humanity" and "Temperance League". The foremost woman bears the shield seen in the Seal of the United States (based on the U.S. flag), suggesting the patriotic motivations of temperance campaigners. The shoe and pants-leg of a fleeing male miscreant are seen at lower right. Womans-Holy-War.jpg
"Woman's Holy War. Grand Charge on the Enemy's Works". An allegorical 1874 political cartoon print by Currier and Ives, which somewhat unusually shows temperance campaigners (alcohol prohibition advocates) as virtuous armored women warriors (riding sidesaddle), wielding axes Carrie-Nation-style to destroy barrels of Beer, Whisky, Gin, Rum, Brandy, Wine and Liquors, under the banners of "In the name of God and humanity" and "Temperance League". The foremost woman bears the shield seen in the Seal of the United States (based on the U.S. flag), suggesting the patriotic motivations of temperance campaigners. The shoe and pants-leg of a fleeing male miscreant are seen at lower right.

Fasting is primarily the act of willingly abstaining from some or all food, drink, or both, for a period of time. A fast may be total or partial concerning that from which one fasts, and may be prolonged or intermittent as to the period of fasting. Fasting practices may preclude sexual activity as well as food, in addition to refraining from eating certain types or groups of foods; for example, one might refrain from eating meat. A complete fast in its traditional definition is abstinence of all food and liquids except for water.

Vegetarianism is the practice of a diet that excludes meat (including game, marine mammals and slaughter by-products), poultry, fowl, fish, shellfish and other sea creatures. [17] [18] There are several variants of the diet, some of which also exclude eggs or products produced from animal labour such as dairy products and honey.

Tobacco smoking

Smoking cessation is the discontinuation of a smoked or vaporized substance, such as tobacco or anything containing nicotine.

Alcohol

Teetotalism is the practice and promotion of complete abstinence from alcoholic beverages.

Some common reasons for choosing teetotalism are religious, health, family, philosophical or social reasons, and, sometimes, as simply a matter of taste preference. When at drinking establishments, they either abstain from drinking or consume non-alcoholic beverages such as tea, coffee, water, juice, and soft drinks.

Contemporary and colloquial usage has somewhat expanded teetotalism to include strict abstinence from most "recreational" intoxicants (legal and illegal, see controlled substances). Most teetotaller organizations also demand from their members that they do not promote or produce alcoholic intoxicants.

Pleasure

A general abstinence from pleasures or leisure, either partial or full, may be motivated by ambition, career or general self-respect (excluding the point of view that even the latter examples may be regarded as sources of pleasure).

Purity rings are worn by some youth committed to the practice of sexual abstinence. Purity-Rings.jpg
Purity rings are worn by some youth committed to the practice of sexual abstinence.

Sexual abstinence

Caffeine

This systematic review highlights the effectiveness of caffeine abstinence for improving sleep quality. [20]

Organizations

See also

Related Research Articles

<span class="mw-page-title-main">Friday</span> Day of the week

Friday is the day of the week between Thursday and Saturday. In countries that adopt the traditional "Sunday-first" convention, it is the sixth day of the week. In countries adopting the ISO 8601-defined "Monday-first" convention, it is the fifth day of the week.

<span class="mw-page-title-main">Shrove Tuesday</span> Tuesday before Ash Wednesday

Shrove Tuesday is the final day of Shrovetide, marking the end of pre-Lent. Lent begins the following day with Ash Wednesday. Shrove Tuesday is observed in many Christian countries through participating in confession; the ritual burning of the previous year's Holy Week palms; finalizing one's Lenten sacrifice; as well as eating pancakes and other sweets.

<span class="mw-page-title-main">Ash Wednesday</span> First day of Lent in Western Christianity

Ash Wednesday is a holy day of prayer and fasting in many Western Christian denominations. It is preceded by Shrove Tuesday and marks the first day of Lent, the six weeks of penitence before Easter.

Christian vegetarianism is the practice of keeping to a vegetarian lifestyle for reasons connected to or derived from the Christian faith. The three primary reasons are spiritual, nutritional, and ethical. The ethical reasons may include a concern for God's creation, a concern for animal rights and welfare, or both. Likewise, Christian veganism is not using any animal products for reasons connected to or derived from the Christian faith. Pescatarianism was widespread in the early Church, among both the clergy and laity. Among the early Judeo-Christian Gnostics the Ebionites held that John the Baptist, James the Just and Jesus were vegetarians.

<span class="mw-page-title-main">Fish fry</span> Dish consisting of battered or breaded fried fish

A fish fry is a meal containing battered or breaded fried fish. It usually also includes french fries, coleslaw, macaroni salad, lemon slices, tartar sauce, hot sauce, malt vinegar and dessert. Some Native American versions are cooked by coating fish with semolina and egg yolk.

<span class="mw-page-title-main">Friday fast</span> Christian practice of abstaining from meat, lacticinia and alcohol on Fridays

The Friday fast is a Christian practice of variously abstaining from meat, dairy products and alcohol, on Fridays, or holding a fast on Fridays, that is found most frequently in the Eastern Orthodox, Oriental Orthodox, Catholic, Lutheran, Anglican and Methodist traditions. The Teaching of the Twelve Apostles, written in the first century A.D., directed Christians to fast on both Wednesdays and Fridays. The Wednesday fast is done in remembrance of the story of the betrayal of Christ by Judas on Spy Wednesday, while the Friday fast is done in commemoration of the crucifixion of Jesus Christ on Good Friday. As such, all Fridays of the year have been historically kept in many parts of Christendom as a day of strict fasting and abstinence from alcohol, meat and lacticinia. Abstinence from meat on Fridays is done as a sacrifice by many Christians because they believe that on Good Friday, Jesus sacrificed his flesh for humanity. In the Eastern Orthodox Church, in addition to fasting from food until sundown, the faithful are enjoined to abstain from sexual relations on Fridays as well.

<span class="mw-page-title-main">Fasting and abstinence in the Catholic Church</span>

The Catholic Church historically observes the disciplines of fasting and abstinence at various times each year. For Catholics, fasting is the reduction of one's intake of food, while abstinence refers to refraining from something that is good, and not inherently sinful, such as meat. The Catholic Church teaches that all people are obliged by God to perform some penance for their sins, and that these acts of penance are both personal and corporeal. Bodily fasting is meaningless unless it is joined with a spiritual avoidance of sin. Basil of Caesarea gives the following exhortation regarding fasting:

Let us fast an acceptable and very pleasing fast to the Lord. True fast is the estrangement from evil, temperance of tongue, abstinence from anger, separation from desires, slander, falsehood and perjury. Privation of these is true fasting.

<span class="mw-page-title-main">Fasting and abstinence of the Coptic Orthodox Church</span> Coptic Orthodox fasts

The Copts, who belong to the Coptic Orthodox Church, observe fasting periods according to the Coptic calendar. In Coptic Orthodox Christianity, fasting is defined as going without water and food from midnight to sunset; after that time, the consumption of water and one vegetarian meal is permitted. The fasting periods of Coptic Christians are exceeded by no other Christian denomination except the Orthodox Tewahedo. Out of the 365 days of the year, Copts often fast between 210 and 240 days. This means that Copts abstain from all animal products for up to two-thirds of each year. Coptic Orthodox fasts have evolved over time to become more lengthy and severe. A lifestyle involving such fasts may have contributed to the pacifist mindset of the Coptic people for centuries. Married couples refrain from sexual relations during Lent "to give themselves time for fasting and prayer".

<span class="mw-page-title-main">Black Fast</span> Ancient form of Christian fasting

A Black Fast, also known as a strict fast, is a form of early Christian fasting. Those undertaking a Black Fast consume no food or water during the day and then break the fast after sunset with prayer, as well as water and a vegetarian meal devoid of meat, eggs, dairy products (lacticinia), and alcohol. Christians normatively fasted in this way during Lent prior to the 6th century.

Meat-free days or veggiedays are declared to discourage or prohibit the consumption of meat on certain days of the week. Mondays and Fridays are the most popular days. There are also movements encouraging people giving up meat on a weekly, monthly, or permanent basis.

<span class="mw-page-title-main">Easter basket</span> Traditional basket used at Easter

An Easter basket, also known as a Paschal basket, is a basket used during the Christian Easter season. In different times and places across the various Christian branches, Easter baskets have served different purposes. For adults, Easter baskets may have deep religious significance and be blessed by a priest. In modern times, the baskets may be filled with food or toys and presented to children as gifts. They are also used by children to gather hidden eggs during egg hunts.

<span class="mw-page-title-main">Lent</span> Annual pre-Easter Christian observance

Lent is the solemn Christian religious observance in the liturgical year commemorating the 40 days Jesus spent fasting in the desert and enduring temptation by Satan, according to the Gospels of Matthew, Mark and Luke, before beginning his public ministry. Lent is usually observed in the Catholic, Lutheran, Moravian, Anglican, United Protestant and Orthodox Christian traditions, among others. Some Anabaptist, Baptist, Methodist, Reformed, and nondenominational Christian churches also observe Lent, although many churches in these traditions do not.

<span class="mw-page-title-main">Daniel Fast</span> Partial fast in Christianity

The Daniel Fast, in Christianity, is a partial fast, in which meat, dairy, alcohol, and other rich foods are avoided in favor of vegetables and water in order to be more sensitive to God. The fast is based on the lifelong kosher diet of the Jewish prophet Daniel in the biblical Book of Daniel and the three-week mourning fast in which Daniel abstained from all meat and wine. Among Catholic and Mainline Protestant Christians, the Daniel Fast has been practiced by some during the 40-day season of Lent, though the Daniel Fast can variously be set at three weeks, or even ten days. As such, evangelical Christian churches such as those of the Baptist tradition, have partaken in the fast at various times of the year. The passage in Chapter 1 refers to a 10-day test wherein Daniel and others with him were permitted to eat vegetables and water to avoid the Babylonian king's food and wine. After remaining healthy at the end of the 10-day period, they continued the vegetable diet for the three years of their education. The passage in Chapter 10 refers to a three-week fast of no meat, wine, or rich food. In addition to the practices of fasting and abstinence undertaken during the Daniel Fast, Christians may also add spiritual disciplines such as daily church attendance, increased prayer, as well as the reading of Sacred Scripture and a daily devotional.

Christian dietary laws vary between denominations. The general dietary restrictions specified for Christians in the New Testament are to "abstain from food sacrificed to idols, from blood, from meat of strangled animals". Some Christian denominations forbid certain foods during periods of fasting, which in some cases may cover half the year and may exclude meat, fish, dairy products, and olive oil.

<span class="mw-page-title-main">Teetotalism</span> Abstinence from the consumption of alcohol

Teetotalism is the practice or promotion of total personal abstinence from the consumption of alcohol, specifically in alcoholic drinks. A person who practices teetotalism is called a teetotaler (US) or teetotaller (UK), or said to be teetotal. Globally, almost half of adults do not drink alcohol. A number of temperance organisations have been founded in order to promote teetotalism and provide spaces for non-drinkers to socialise.

<span class="mw-page-title-main">Lenten sacrifice</span> Sacrifice during Lent

A Lenten sacrifice is a spiritual practice where Christians, particularly Catholics, Lutherans, Anglicans, Methodists, Moravians and the United Protestants voluntarily renounce a pleasure or luxury during the observance of Lent, which begins on Ash Wednesday. The tradition of Lent has its roots in Jesus Christ praying and fasting for forty days in the desert according to the gospels of Matthew, Mark and Luke. When Lent is over and Easter Sunday arrives, the faithful are able to indulge in what they sacrificed during the Lenten season.

<span class="mw-page-title-main">Fasting and abstinence in the Ethiopian Orthodox Tewahedo Church</span>

Fasting and abstinence have historically constituted a major element of the practice of the Ethiopian Orthodox Tewahedo Church, following the counsel of Saint Paul to "chastise the body and bring it under subjection" per 1 Corinthians 9:27. It is generally agreed, and asserted by the Church itself, that the fasting regime of the Ethiopian Church is the strictest of any Church, with 180 mandatory fasting days for laypeople and up to 252 days for clergy and the particularly observant. The general list of fasts are laid out in the Fetha Negest.

<span class="mw-page-title-main">Lenten supper</span> Christian meal

A Lenten supper is a meal that takes place in the evenings to break the day's fast during the Christian liturgical season of Lent, which is widely observed by members of the Catholic, Lutheran, Moravian, Anglican, Methodist, and United Protestant traditions, in addition to certain Reformed denominations.

Fasting is practiced in various religions. Examples include Lent in Christianity and Yom Kippur, Tisha B'av, Fast of Esther, Fast of Gedalia, the Seventeenth of Tammuz, and the Tenth of Tevet in Judaism. Muslims fast during the month of Ramadan each year. The fast includes refraining from consuming any food or liquid from sunup until sundown.

<span class="mw-page-title-main">Shrovetide</span> Liturgical period

Shrovetide is the Christian liturgical period prior to the start of Lent that begins on Shrove Saturday and ends at the close of Shrove Tuesday. The season focuses on examination of conscience and repentance before the Lenten fast. It includes Shrove Saturday, Shrove Sunday, Shrove Monday and Shrove Tuesday.

References

  1. "Fasting Guidelines" (PDF). Lutheran Church–Missouri Synod. 2016. Archived from the original (PDF) on 31 December 2022. Retrieved 17 March 2018.
  2. Buchanan, Colin (27 February 2006). Historical Dictionary of Anglicanism. Scarecrow Press. p. 182. ISBN   978-0-8108-6506-8. In the 1662 Book of Common Prayer, there is a list of "Days of Fasting, or Abstinence," consisting of the 40 days of Lent, the ember days, the three rogation days (the Monday to Wednesday following the Sunday after Ascension Day), and all Fridays in the year (except Christmas, if it falls on a Friday).
  3. Carota, Peter (7 February 2014). "Holy Communion Fast For Traditional Catholics". Traditional Catholic Priest. Retrieved 15 April 2021.
  4. John Wesley (1825). The Sunday Service of the Methodists . J. Kershaw. p. 145. Days of Fasting or Abstinence All the Fridays in the Year, except Christmas-Day
  5. The Discipline of the Allegheny Wesleyan Methodist Connection (Original Allegheny Conference). Salem: Allegheny Wesleyan Methodist Connection. 2014. pp. 37, 44.
  6. "Why don't Catholics eat meat on Fridays?". Roman Catholic Archdiocese of Saint Paul and Minneapolis . Retrieved 2 March 2022. Abstinence is one of our oldest Christian traditions. "From the first century, the day of the crucifixion has been traditionally observed as a day of abstaining from flesh meat ("black fast") to honor Christ who sacrificed his flesh on a Friday" (Klein, P., Catholic Source Book, 78). ... Since Jesus sacrificed his flesh for us on Good Friday, we refrain from eating flesh meat in his honor on Fridays.
  7. "Lent: Daniel Fast Gains Popularity". HuffPost. Religion News Service. February 7, 2013. Retrieved December 30, 2018. In some cases, entire churches do the Daniel Fast together during Lent. The idea strikes a chord in Methodist traditions, which trace their heritage to John Wesley, a proponent of fasting. Leaders in the African Methodist Episcopal Church have urged churchgoers to do the Daniel Fast together, and congregations from Washington to Pennsylvania and Maryland have joined in. For the fourth consecutive year, St. Mark's United Methodist Church in Charlotte, N.C., will observe Lent this year with a churchwide Daniel Fast. Young adults in the congregation tend to keep the fast more rigorously than older ones, according to Pastor Paul Milton.
  8. Hinton, Carla (20 February 2016). "The Fast and the Faithful: Catholic parish in Oklahoma takes up Lenten discipline based on biblical Daniel's diet". The Oklahoman . Retrieved 27 March 2022. Many parishioners at St. Philip Neri are participating in the Daniel fast, a religious diet program based on the fasting experiences of the Old Testament prophet Daniel. ... participating parishioners started the fast Ash Wednesday (Feb. 10) and will continue through Holy Saturday, the day before Easter Sunday.
  9. "Daniel Fast – Lent 2021". St. Mary Magdalen Catholic Church. 2021. Retrieved 26 March 2022.
  10. "40 Day Journey & Daniel Fast". Enon Tabernacle Baptist Church. 17 February 2021. Archived from the original on 13 May 2021. Retrieved 28 March 2022. Our family and friends are encouraged to take this journey during the season of Lent. This is a time we as Christians mature spiritually the 40 days before Resurrection Sunday. The Daniel Fast begins Ash Wednesday, February 17, 2021 and ends on Resurrection Sunday, April 4, 2021. Our common practice is 6 days on and 1 day off.
  11. Menzel, Konstantinos (14 April 2014). "Abstaining From Sex Is Part of Fasting". Greekreporter.com. Greek Reporter . Retrieved 27 May 2021.
  12. "Fundamental Beliefs". 2005. Archived from the original on 10 March 2006. Retrieved 2006-03-07.
  13. Tähtinen, Unto (1976). Ahimsa: Non-Violence in Indian Tradition. London. pp. 107–111.{{cite book}}: CS1 maint: location missing publisher (link)
  14. Walters, Kerry S.; Lisa Portmess (2001). Religious Vegetarianism From Hesiod to the Dalai Lama. Albany. pp. 37–91.{{cite book}}: CS1 maint: location missing publisher (link)
  15. 1 2 Hasin, Deborah S.; O'Brien, Charles P.; Auriacombe, Marc; Borges, Guilherme; Bucholz, Kathleen; Budney, Alan; Compton, Wilson M.; Crowley, Thomas; Ling, Walter; Petry, Nancy M.; Schuckit, Marc; Grant, Bridget F. (1 August 2013). "DSM-5 Criteria for Substance Use Disorders: Recommendations and Rationale". American Journal of Psychiatry. 170 (8): 834–851. doi:10.1176/appi.ajp.2013.12060782. PMC   3767415 . PMID   23903334.
  16. Grimm, Jeffrey W.; Barnes, Jesse L.; Koerber, Jonathon; Glueck, Edwin; Ginder, Darren; Hyde, Jeff; Eaton, Laura (2016). "Effects of Acute or Chronic Environmental Enrichment on Regional Fos Protein Expression following Sucrose Cue-reactivity testing in Rats". Brain Structure & Function. 221 (5): 2817–2830. doi:10.1007/s00429-015-1074-z. PMC   4676962 . PMID   26068175.
  17. "The Vegetarian Society - Definitions Information Sheet". The Vegetarian Society. Archived from the original on 1999-11-28. Retrieved 2008-09-03.
  18. "Vegetarian". AskOxford: Vegetarian. Compact Oxford English Dictionary . Archived from the original on 2006-03-17. Retrieved 2008-06-15. a person who does not eat meat for moral, religious, or health reasons.
  19. O'Brien, Jodi (2009). Encyclopedia of Gender and Society. SAGE Publications. p. 155. ISBN   978-1-4129-0916-7. In this subset of abstinence-only education programs, young people vow chastity until marriage and wear a "purity ring" to demonstrate a commitment to sexual abstinence.
  20. Sin, Celia WM; Ho, Jacqueline SC; Chung, Joanne WY (2009). "Systematic review on the effectiveness of caffeine abstinence on the quality of sleep". Journal of Clinical Nursing. 18 (1): 13–21. doi:10.1111/j.1365-2702.2008.02375.x. PMID   19120728.