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 ...

The jumping jack is an effective way to stimulate all the vital muscles of your body. It is a full-body exercise used in cardio and warm-up sessions. Jumping jacks include resistance and aerobic ...

However, jumping jacks also activate your mid-section, which is a group of muscles including the abdominals (rectus abdominus, obliques) and back (lattisumus dorsi and erector spinae).

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 ...

I did plank jacks every day for a week ... Jump both feet out to the side, as you would in a jumping jack. If you’re using a yoga mat, aim to land your feet at the edges of the mat.

Real talk: The thought of doing jumping jacks may be only slightly more enticing than burpees. It may bring back memories of pre-dodgeball warm-ups back when dodgeball was part of gym class. Yet ...