Each branch of the armed forces uses a simple bodyweight exercise to keep everyone in peak physical condition — they clearly understand the benefits of jumping jacks! While exercises like squats, ...

Jumping jacks are one of the most underrated exercises in the fitness world. Simple yet incredibly effective, this childhood favorite has stood the test of time, proving that a full-body workout doesn ...

Things high school gym class was good for: gossiping, checking out your wanna-be S.O. in track shorts, and kinda-sorta learning basic exercises. Jumping jacks were one such staple of P.E., and for ...