Jumping jacks, a staple of school gym classes, are not just for kids—they can also reveal much about your health. Even if you haven’t done the exercise recently, your ability to do them today can ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." YOU MIGHT THINK back to your childhood gym class and remember learning the basics of physical fitness, ...

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 ...