Repeat each circuit of 3 moves for 4 sets total.

CIRCUIT 1
1. Bent over twist row
2. Chest to floor burpee
3. Single arm row

CIRCUIT 2
1. Straight arm sit-up
2. Dumbbell swing
3. Hammer curl

CIRCUIT 3
1. Leg lift to crunch
2. Alternating pullover crunch
3. Low jack

CIRCUIT 4
1. Kneeling twist curl
2. Slow bicycle crunch
3. Twist down curl