Plank Up-Down

Starting position

• Forearm plank, elbows under the shoulders.
• Feet slightly wider than hip-width, body in a line.

Execution

• Place one hand, then the other, and push up into the push-up position.
• Lower one forearm, then the other; switch the leading hand.
• The hips stay still.

Common mistakes

• Hips rocking side to side.
• Glutes up.
• Too fast, the line gets lost.