If the 1-10-1 PT pyramid has gotten easy for you, congrats! This classic workout is a useful assessment tool for anyone who likes to mix in high-repetition calisthenics like pull-ups, push-ups, dips ...

Sit on an exercise mat and engage your core. Lean backward to create a V-shape position. If you want to, lift your feet away from the ground and either bend your knees or straighten your legs. Engage ...