Kathy Kaehler Last updated December 16, 2025 Kathy Kaehler
Born Catherine Kaehler
Other names Kathy Koch Alma mater Hope College (BS ) Occupations Fitness professional personal trainer author Spouse Billy Koch (m. 1994) Children Relatives
American fitness professional
Catherine Kaehler , known professionally as Kathy Kaehler , is an American fitness professional, personal trainer, and author. An inductee in the National Fitness Hall of Fame , she is known for training prolific Hollywood celebrities in the 1990s and early 2000s, including the Kardashian family , Julia Roberts , Jennifer Aniston , Samuel L. Jackson , Ellen DeGeneres , Cindy Crawford , and Michelle Pfeiffer . She previously served as a fitness correspondent for NBC 's Today show for 13 years. Kaehler has also authored several fitness and lifestyle books, such as Primetime Bodies and Real World Fitness . She is the mother of actor Cooper Koch , film editor Payton Koch , and musician Walker Koch.
Career Kaehler began working as a personal trainer to actress Jane Fonda . [ 8] In 1991, she became a fitness consultant for NBC 's Today show, appearing with weekly exercise segments every Friday. [ 8] [ 9] She published her first book, Primetime Bodies , in 1996, which she wrote alongside fellow fitness professional Cynthia Tivers. [ 10] Kaehler's notable clients include Julia Roberts , Jennifer Aniston , Carrie Fisher , Cindy Crawford , Michelle Pfeiffer , Kim Kardashian , Kris Jenner , Khloé Kardashian , Kim Basinger , Ellen DeGeneres , Drew Barrymore , Barbra Streisand , Claudia Schiffer , Meg Ryan , Rob Lowe , Andrew McCarthy , and Samuel L. Jackson . [ 11] [ 10] [ 12]
In 2010, Kaehler was announced as an ambassador for Usana Health Sciences . [ 13] [ 14] In the same year, she launched Sunday Set-Up , a weekly lifestyle program. [ 15] [ 16] In 2014, she partnered with Nintendo to promote Wii Fit U . [ 12]
Books Primetime Bodies: The Six-week Hollywood Fitness Program (1996) [ 17] Primetime Pregnancy: The Proven Program for Staying in Shape Before and After Your Baby is Born (1998) [ 18] Real-World Fitness: Fun and Innovative Ways to Help You Sneak in Activity at Home, at Work and with the Kids (1998) [ 19] Fit and Sexy for Life: The Hormone-free Plan for Staying Slim, Strong, and Fabulous in Your Forties, Fifties, and Beyond (2007) [ 20] Kathy Kaehler's Celebrity Workouts: How to Get a Hollywood Body in Just 30 Minutes a Day (2005) [ 21] Teenage Fitness: Get Fit, Look Good, and Feel Great! (2010) [ 22] Mom Energy: A Simple Plan to Live Fully Charged (2011) [ 23] References ↑ "After Graduation | Dance Department" . Hope College . 2025-01-10. Archived from the original on 2024-08-20. Retrieved 2024-12-12 . ↑ Millar, Jake (2024-12-09). " "It was one of the greatest acting experiences I've ever had": Cooper Koch is writing his next chapter" . GQ Australia . Archived from the original on 2024-12-10. Retrieved 2024-12-12 . 1 2 "Hip Daddy Spotlight #5: Horse Racing Owner Billy Koch" . Hip Daddy . Archived from the original on 2024-06-18. Retrieved 2024-12-12 . 1 2 Kaehler, Kathy; Tivers, Cynthia (1998). Primetime Pregnancy: The Proven Program for Staying in Shape Before and After Your Baby is Born . Contemporary Books. ISBN 978-0-8092-3072-3 . ↑ LeGardye, Quinci (2024-09-20). "Ryan Murphy's Next Breakout Star Brings Erik Menendez to Life in 'Monsters'—Meet Cooper Koch" . Marie Claire . Archived from the original on 2024-10-01. Retrieved 2024-12-12 . ↑ Murphy, Chris (2024-10-10). "Nicholas Alexander Chavez and Cooper Koch Don't Think the Menendez Brothers Are 'Monsters' " . Vanity Fair . Archived from the original on 2025-01-30. Retrieved 2025-02-21 . ↑ "Diet Woes? Hire a Food Trainer" . WebMD . Retrieved 2025-02-21 . 1 2 3 Larsen, Angie (2012-03-22). "Influencer Insider: Kathy Kaehler's Jammin' Journey" . What's Up, USANA? . Archived from the original on 2024-04-19. Retrieved 2024-12-12 . ↑ "Kathy Kaehler Biography | Booking Info for Speaking Engagements" . All American Speakers . Archived from the original on 2023-02-02. Retrieved 2024-12-12 . 1 2 Tivers, Cynthia; Kaehler, Kathy (1996). Primetime Bodies: The Six-week Hollywood Fitness Program . Contemporary Books. ISBN 978-0-8092-3281-9 . ↑ "Kathy Kaehler" . NBC News . 2007-04-24. Archived from the original on 2024-12-12. Retrieved 2024-12-12 . 1 2 Schulman, Alissa (2014-02-05). "Celebrity Trainer Kathy Kaehler's Fitness Tips Inspired by Kardashians" . Us Weekly . Archived from the original on 2023-03-29. Retrieved 2024-12-12 . ↑ Dangel, Misty (2014-04-24). "Kathy Kaehler: What?! Exercise Can be Fun?" . What's Up, USANA? . Retrieved 2024-12-12 . ↑ "USANA's Historic Timeline" . Usana Health Sciences . Retrieved 2024-12-12 . ↑ Gallo, Amy (2012-02-17). "Kathy Kaehler's Fat-Burning Workout" . SELF . Archived from the original on 2023-06-03. Retrieved 2024-12-12 . ↑ Burke, Pamela (2014-07-20). "Celebrity Trainer Kathy Kaehler on How Busy Women Can Stay Fit and Healthy for Life" . The Women's Eye . Archived from the original on 2024-07-23. Retrieved 2024-12-12 . ↑ Tivers, Cynthia; Kaehler, Kathy (1996). Primetime Bodies: The Six-week Hollywood Fitness Program . Contemporary Books. ISBN 978-0-8092-3281-9 . ↑ Kaehler, Kathy; Tivers, Cynthia (1998). Primetime Pregnancy: The Proven Program for Staying in Shape Before and After Your Baby is Born . Contemporary Books. ISBN 978-0-8092-3072-3 . ↑ Kaehler, Kathy; Olson, Cheryl K. (1998-12-15). Real-World Fitness: Fun and Innovative Ways to Help You Sneak in Activity at Home, at Work and with the Kids . Macmillan. ISBN 978-1-58238-026-1 . ↑ Kaehler, Kathy (2007). Fit and Sexy for Life: The Hormone-free Plan for Staying Slim, Strong, and Fabulous in Your Forties, Fifties, and Beyond . Broadway Books. ISBN 978-0-7679-1618-9 . ↑ Kaehler, Kathy (2005). Kathy Kaehler's Celebrity Workouts: How to Get a Hollywood Body in Just 30 Minutes a Day . Broadway Books. ISBN 978-0-7394-4990-5 . ↑ Kaehler, Kathy (2010-10-05). Teenage Fitness: Get Fit, Look Good, and Feel Great! . Harper Collins. ISBN 978-0-06-204330-6 . ↑ R.D, Ashley Koff; Kaehler, Kathy (2011-09-01). Mom Energy: A Simple Plan to Live Fully Charged . Hay House, Inc. ISBN 978-1-4019-3153-7 . ↑ As the World Turns (Drama, Romance), Elizabeth Hubbard, Jon Hensley, Ellen Dolan, Procter & Gamble Productions (PGP), CBS, TeleNext Media, 1956-04-02, retrieved 2024-12-12 {{citation }}: CS1 maint: others (link ) ↑ "Rob's New Girlfriend - Keeping Up with the Kardashians (Season 2, Episode 3) - Apple TV" . Apple TV . 2008-03-23. Retrieved 2024-12-12 . ↑ Petersen, Kevin (2011-09-28). "Kathy Kaehler's Sunday Set-Up™" . EIN Presswire . Retrieved 2024-12-12 . ↑ "Kathy Kaehler | Actress, Additional Crew" . IMDb . Retrieved 2024-12-12 . ↑ Rusty Camel (Comedy), Daniel O'Reilly, Kalay Moore, Brandon Stewart, Brandon TV, SwitchKill Productions, 2020-04-08, retrieved 2024-12-12 {{citation }}: CS1 maint: others (link ) ↑ Wendl, Nicolas (2024-11-21), Down the Wicked Road (Short, Music), Kathy Kaehler, Kelly Rebecca Walsh, Cherise Thomas, WendlWood Productions, retrieved 2024-12-12
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