How to: Put your hands shoulder width apart on the floor or on a set of dumbells. Place yourself in the basic push-up position with your arms in line with your chest and your legs extended outward. Stay on the balls of your feet, bring one leg forward toward your chest touching down quickly under your core and back to its original position, then quickly switch legs. Keep your core tight, think about drawing your belly button towards your spine to help you draw your legs forward and back. Try 2-3 sets of 30-60 seconds between your lifting sets.
Why: Mountain Climbers condition your entire body and are excellent for developing foot, leg, and shoulder muscles. You can increase your overall stamina and core strength too.