If you've found that planks [1] and other ab exercises are becoming too easy, I've got the upgrade you need: crocodile walks. This move is no joke and has become one of my staple ab exercises [2] for a strong, sculpted core. I love this exercise because it targets all the muscles in your abs, and it also works your arms — that's a win-win in my book.

With that being said, this is the perfect time to remind you that this exercise, and any other core exercises, alone won't magically flatten your stomach and reveal a six-pack. In order to truly reduce the size of your stomach, you're going to need to focus on what you're consuming (ideally whole, minimally processed foods) and do workouts that suit your physical abilities and goals.

Now, without further ado, it's time to start sculpting your abs.

Here's how to do it:

• Grab a pair of gliders [3], and put the hard side down on the ground. Place your toes on top of the gliders, and come into a plank position. Your wrists should be directly underneath your shoulders, and your back and neck should be in a neutral position.
• Engage your abdominals as you move your right hand forward as you simultaneously pull your entire body forward. Repeat this same movement with your left hand. Continue to move forward with control. Be sure to maintain a plank position throughout the entire motion, never rotating your hips and torso.
• Move forward for 10 meters.