AB Blast!

Perform 10 single leg/double jack knives followed by 30 mountain climbers .... 3 sets!

Lay on the ground (or a bench to challenge yourself with balance). Use a medicine ball and bring the med ball up to meet your toes on your left leg. Then do the same with your right leg. Then bring the med ball up to meet both legs = 1 rep. Go all the way up to 10.

Then get on the ground in a pushup position (shoulders over wrists) and sprint, performing 30 mountain climbers total.