YOU MIGHT THINK back to your childhood gym class and remember learning the basics of physical fitness, setting a foundation for the grown-up workouts you continue to do today. While you likely keep ...

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. Jumping jacks, a staple of school gym classes, are not just for kids—they can also reveal much about your health. Even if you ...

Planks and jumping jacks are perfectly fine workout moves. But if you combine the two together, you can actually get an even better total-body workout. Meet: the plank jack! Plank jacks involve ...