2. Core. It may surprise you to learn that the core is among the muscles used in jumping jacks. When you think of core workouts, your mind might drift to other legendary gym-class exercises like ...

Remember when jumping seemed like so much fun when you were a kid? Why not bring some of that fun to your workout regimen ...

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 ...

You might have left this early exercise staple back in your school days, but your training would be better with them.

Plyometric exercises, like jumping jacks, are intended to help people run faster and jump higher. That’s because plyometrics work by rapidly stretching the muscles (eccentric phase) and then ...

Jumping jacks mix cardio and resistance work in one swift move (er, jump), while engaging multiple muscles, including the glutes, hamstrings, quads, and calves, as well as the muscles of the core ...

“Jumping jacks are a great way to activate several muscle groups when working out, and they’re perfect to use for warm-ups or in any sort of high-intensity workout,” says Don, who’s also ...

Jumping jacks might seem like a basic exercise, but they offer serious benefits, including boosting your cardiovascular system and toning your muscles. They’re a plyometric, total-body move that ...

Jumping Jacks: Muscles Worked and Why They Matter 1. Deltoids. Deltoids are a fancy term for "shoulder muscles." "The deltoids are located at the top of the arm and cover the shoulder joint ...

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 ...