Begin on all fours with your hands directly below your shoulders and your knees beneath your hips. Keeping your core engaged and your back flat, lift your knees so they're hovering over the mat.
Bring your right hand back to tap your left knee, keeping your left toes on the ground. Return your hand and foot to the mat, then alternate, tapping your left hand to your right knee.
This counts as one rep.
Complete as many reps as you can with proper form for 45 seconds, followed by a 15-second rest.
