15. Plank With Shoulder Tap (or Handstand Hold) If this is easy, do an L-stand or a handstand hold against the wall instead, holding for 20 to 40 seconds. Begin in a plank variation with your feet slightly wider than your hips for added stability. Keeping your torso stable, bring your right hand to your left shoulder, then return your right hand back to the mat. Bring your left hand to your right shoulder, and return it to the mat. This counts as one rep. Do as many shoulder taps as you can in 40 seconds, followed by a 20-second rest. Image Source: POPSUGAR Photography / Kyle Hartman NEXT GALLERY The Safe Hands Challenge Will Teach You to Scrub Places You Might Have Missed by Samantha Brodsky