Keeping your core engaged and your hands fixed in front of your chest (working to keep the handles stabilized), bend your elbows, lowering your chest between your hands. When you've performed the downward phase of the push-up, reverse the movement and press back to the starting position. Perform 10 push-ups before switching legs and performing 10 more.
Suspension mountain climbers offer a quick burst of cardio and are very similar in form to traditional mountain climbers, but with your feet suspended in the straps, you'll further engage your core.
Adjust the straps so the loops are relatively close to the floor. Kneel on the ground in front of the suspension trainer and slide your feet into the loops -- one foot per loop. Place your palms on the ground directly under your shoulders, engage your core, lift your knees from the floor, and extend your legs so you're in a full push-up position with your feet suspended. Once you're steady, perform the mountain climber by pulling one knee to your chest with your other leg extended, then switch legs, extending your bent knee and drawing your straight leg to your chest. Continue alternating legs as long as you can while maintaining good form -- aim for 20 to 60 seconds.