00:00Just crawl into the plank, basically.
00:04Challenge your core and upper body with the mountain climber.
00:07Come into a plank position with wrists below your shoulders and a neutral spine.
00:11Bring your right knee under your torso, then switch.
00:15Make this a cardio exercise by moving at a quick pace.
00:18You'll feel your heart rate spike immediately.
00:21You climb that mountain.
