Absolutely Everything You Need to Know About Planks

To challenge yourself in a high plank and feel a burn in your arms, add some shoulder taps.

• Start in a high plank position with your shoulders over your wrists, core engaged, and tailbone slightly tucked. Step your feet out so they're shoulder-width apart or slightly wider.
• Without moving anything else in your body, lift up your right hand to tap your left shoulder. Try not to let your hips rotate to the side, and keep your weight centered between both feet. With control, place your right hand back on the floor.
• Repeat on the opposite side, tapping your right shoulder with your left hand.
• That's one rep. Do three sets of 20 reps, resting for 30 seconds to one minute between sets.