The push-up is an old favorite for strengthening the upper body, but improper form can do more harm than good. Be aware of these four things as you execute a push-up: body alignment, hands, abs, and breath.
This movement allows you to advance your basic push up to the next level.
Mountain Climbers feels a little like running in place in a plank position
The Superman targets your posterior muscles to correct body imbalances by strengthening often-neglected areas of your body.
Side planks tone the core, and adding the reverse fly into the mix not only challenges the abs a bit more, but also tones the back of the shoulder. Squeeze your inner thighs together for added stability.