There is a reason why the classic push-up remains a staple in training regimens around the world. It gets results. But if you're looking to upgrade to a more challenging variation, consider the medicine ball push-up. Keeping your elbows close to the body and maintaining good postures are keys to performing this. Watch Travelle Gaines, the trainer for many pro athletes, demonstrate the proper technique:

Check out more fitness stories on ThePostGame.