Fancy seeing how much spring you've got in your legs?

This challenge is all about vertical leaps - and all you need is a tall wall! (Plus a measuring tape and talcum powder!)

To see how high you jump you'll need to start by measuring your initial reach.

Dip your fingers into the talc (or some flour), stand against the wall and stretch up to leave a mark at the highest possible point.

So on to the jump. Keep your feet flat on the floor, crouch down and spring up to touch the wall as high as you can.

Get that tape out again and the distance between the bottom mark and the mark you left with the jump is the height you lept!

And try not to use your arms to swing when you're jumping. It's all about the power in your legs!

As a guide, 11-year-olds should be jumping 20 to 40cm, going up to 16-year-olds, whose leaps should be between 22 to 55cm.