Try this movement at the gym, and you may get some side eyes from other patrons. But their looks will be worth it when they can't stop staring at your abs. 

Men’s Health Next Top Trainer Andy Speer shows you how to do the "crazy crawler." Basically, it's a bear crawl on steroids.

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You'll start in a quadruped position with your hands directly beneath your shoulders and your knees beneath your hips. Your back should be flat like a table top. 

Then, you'll lift your left hand off the ground and sweep your right leg underneath your body. Since you're removing two points of support from the floor, your core must work harder to stay stable as you alternate from side to side. 

Once you can dominate that pattern, increase the challenge to your midsection. Speer recommends jumping your feet back into a pushup or even bear crawling 10 to 20 feet forward-and- backward between reps.

Related: 4 Ways To Make Side Planks Less Boring

Start by performing the movement for 1 to 2 minutes at a time with perfect form, and work your way up to 5 minutes.

More Men's Health:
-- Lunchtime Workout That Will Torch Fat For Rest Of The Day
-- A One-Move Workout Will Make Quads, Glutes And Abs Scream
-- 30-Minute Insane Interval Workout
-- The J.J. Watt Workout

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