Work for 45 seconds, rest for 15 seconds in between moves. Second time through, work for 30 seconds, rest for 10 in between moves. Third time through work for 20 seconds (going as hard as you can) no rest in between moves. Give it a try!
1. Using sliders: in and out, alternating legs
2. Commandos
3. Plank hold
4. Using sliders: mountain climbers
