Jumping Jack

Jumping jacks are a simple and effective exercise that can improve your cardiovascular fitness, burn calories and strengthen your muscles. To do a jumping jack, follow these steps:

1. Stand with your feet together and your arms at your sides.
2. Jump and spread your feet apart while raising your arms above your head.
3. Jump again and bring your feet back together while lowering your arms to your sides.
4. Repeat for the desired number of reps.