Targets back, triceps, abs, obliques, and butt
- Holding a dumbbell in right hand, palm facing behind you, get on all fours.
- Lift bent right elbow out to side at shoulder level as you bring bent left knee to chest (tuck position).
- Lower dumbbell to floor as you extend left leg behind you. Return to tuck position.
- Do all reps; switch sides and repeat.