The profession is generally not restricted by venue, and personal trainers may work in fitness facilities, in their personal homes, in client homes, or outdoors. Almost all personal trainers and group exercise instructors work in physical fitness facilities, health clubs, and fitness centers located in the amusement and recreation industry or in civic and social organizations.
Personal trainers may specialize in a certain training type, training philosophy, performance type, exercise modality, or client population. In general, most personal trainers develop exercise prescription plans for aerobic exercise, resistance exercise, and/or flexibility training. With aerobic exercise prescription, personal trainers determine the type of exercise, duration of exercise, frequency, and duration.
For resistance exercise prescription, the type of exercise, total session volume, rest period, frequency, and intensity are determined.Personal trainers may also be involved in prescription of stretching routines or other approaches. While some discuss nutrition, ergogenic supplementation, and spiritual practices with clients, there is debate within the industry as to whether it fits within their scope of practice and training qualifications.