No, This Core-Zapping, Heart-Pounding "Burpee Bolt" Isn't Impossible — It Just Looks That Way

To modify, Jericho said, "try the move broken down at a slow and steady pace. Make sure to focus on overall technique and proper alignment at all times." As one option, replace the bolt with a slow mountain climber, simply driving the knee toward your chest with a toe tap.

• Start in a high plank — shoulders over hands and weight in your toes.
• With your core engaged, bring your right knee forward under your chest, with your toes just off the ground. Return to your basic plank. Switch legs, bringing the left knee forward.