Reachable workspace is an outcome measure used in medicine to track disease progression in neuromuscular disorders that affect the upper extremities. [1] [2] It is defined as the space, relative to the torso, that an individual can reach by moving their upper extremities. [1] It has been used in patients with duchenne muscular dystrophy (DMD) and facioscapulohumeral muscular dystrophy (FSHD). [1] [3]