Upgrade Your Push-Ups: Atomic Push-Up
With a few simple tweaks, this classic move can become an even better toner. Build on a classic push-up.
Get into a straight-arm plank with hands a few inches outside of shoulders and feet on a stability ball (or in the loops of TRX suspension training bands.) Bend arms and lower chest to floor; push back up. Bring knees in toward chest, then kick them back out; repeat entire sequence.
Make it Harder: Go faster. Speed offers the added element of cardio.
Body Benefit: The ball creates instability which forces the muscles in your shoulders and core to work harder to maintain balance.