Mountain climber

How to do it

1. Set up in a high plank position with your hands under your shoulders.
2. Keep your body in a straight line and your core firm.
3. Drive one knee toward your chest without lifting your hips.
4. Return the foot to the start and switch legs immediately.
5. Alternate legs at a steady pace while keeping the hips low.

Common mistakes

• Raising the hips above the line of the body
• Placing the hands poorly and sinking the shoulders
• Going so fast that technique breaks down