Jump knee-tucks

Muscles worked

You need

How to do it

1. Stand with your feet hip-width apart, knees soft.
2. Dip into a quarter squat, swing your arms, and jump as high as you can - driving both knees up toward your chest at the top of the jump - then extend your legs back down and land softly on the balls of your feet, knees bending deep to absorb it.
3. Reset your balance, then go again.
4. Height first, tuck second: the knees come to you at the top, you don't fold forward to meet them.