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CFSR 3.04.18

Box Jumps

Jumping increases your strength and muscle tone, and builds both upper body and lower body strength. Box jumps force you to jump high enough that you’re forced to use every single muscle in your legs (as well as your arms) to propel you up on the box and improve your balance.

When you jump, your body burns 800 to 1,000 calories an hour (compare that to 200 to 300 calories burned per hour while walking).

Box jumps will improve your vertical jump, speed, and endurance, as well as increase your coordination.

To perform it correctly you should select a box height that challenges your jumping ability, but is not so high that it is your hip flexibility, rather than your muscular power that is allowing you to successfully complete the jump.

Check out the tutorial below from CrossFit.com:

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