But they also torch calories and work your entire body. Mountain climbers, named after the challenging workout of climbing a mountain, improve both leg and core strength and raise your heart rate.

Some of the best bodyweight exercises you can do at home include squats, push-ups, mountain climbers ... but using your body weight to exercise can be efficient. Stand with feet shoulder-width ...

If you’ve got a consistent fitness routine ... or 30 mountain climbers per side. This is what Matheny calls a “multi-joint movement” that gets your whole body and core involved.