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

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, ...

Whether you’re a jumping jack fanatic or you haven’t done a jumping jack since middle school gym class, there’s one thing (okay, two things) most of us can agree on: jumping jacks are fun (they make ...

Add Yahoo as a preferred source to see more of our stories on Google. Person doing jumping jacks workout Look, I’m gonna be straight with you – those online calculators that tell you exactly how many ...

Jumping rope is an effective workout — it can help you lose fat, build muscle and improve agility. Plus, they are a portable and affordable piece of exercise equipment, so they're great for travel or ...