There are few things in life more satisfying than a deep burn in your abs.
This exercise, the hollow-body kickout, is one of the quickest routes to that feeling -- and a stronger core.
You'll start from a hollow-body position, a challenging stance to begin with because it requires your entire core to activate at once.
If you lack strength and stability throughout your middle, you’ll feel the burn almost instantly, says Men’s Health Next Top Trainer Andy Speer, C.S.C.S.
(Heck, even if you're a steel pillar from head to toe, you'll find this exercise tough to hold for just a short period of time.)
And adding the kickout turns up the intensity on your torso.
The in-and- out movement forces your core to stabilize even more. Plus, pressing your elbows to your knees is like doing a mini-crunch that targets your six pack.
Watch the video above to see how to perform the exercise with proper form, and try it for yourself to see why Speer says it’s one of the most killer ab moves out there.