When designing a flexibility training session, how much volume (in time) should be included per muscle group?
a. 30 seconds
b. 60 seconds
c. 90 seconds
d. 120 seconds
e. none to these
Answer: b. 60 seconds
60 seconds is correct because for the best results, according to research, a total of 60 seconds per muscle group within a flexibility session is recommended. This can be accomplished by performing multiple stretches for the same muscle group or by performing the same stretch for multiple sets.