Jumping jacks are an efficient total-body workout that you can do almost anywhere. This exercise is part of what’s called plyometrics, or jump training. Plyometrics is a combination of aerobic ...

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 ...

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, ...