http://AskTheTrainer.com Push ups with rotation is a great way to work your chest along with your core and obliques. Start from the push up position with a neutral spine, this means not arched back with antererior pelvic tilt. If you do not know what this is please visit http://AskTheTrainer.com/posture-problems.html Perform a push up by dropping your chest to the floor with your head in neutral alignment. You can spring into the side plank or perform it separately after your push up. Make sure your hips do not sag towards the floor. Try to keep your top arm completely straight while you rotate. You can increase the difficulty by using resistance around your wrists or holding dumbbells.