“Jumping jacks are one of those things that everyone was told to do in P.E. class. They were seen as this sort of no-athletic objective, basic exercise that was just meant to make you tired.

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 ...

Jumping Jacks Are a Dynamic Warmup You’ll Actually Do. A dynamic warmup, where you get your joints and heart moving instead of just stretching, will make your workouts better.

Jumping Jacks Are a Dynamic Warmup You’ll Actually Do. A dynamic warmup, where you get your joints and heart moving instead of just stretching, will make your workouts better.