Sit ups are pretty great for achieving the following:
If you think about how your abs work in an everyday situation, it’s never to bend down as hard as you can, or crunch yourself to death. Instead, your core is used to a bunch of “anti’s” (anti-flexion, anti-extension, anti-rotation) in order to save your spine.
Yes, your abs protect your spine. Which makes me think Lolo Jones
So, you may ask, how do you get a better core and Channing Tatum-like abz? The first step, is actually with an exercise called “dead bugs.”
They are called dead bugs, because you guessed it, if you’re doing them correctly you should look like a dead bug.
I’ve never met someone who’s had an “easy time” during these. Well that’s not true, but that’s because they wouldn’t listen to me and were doing them completely wrong.
Is it sexy? No. Is it simple? Yes. Is it easy? No.
If it’s easy – you’re doing it wrong. If it’s not, you’re doing it right.

Alex Tankskey is the founder of The Movement Lab. A former marketer and Facebook surfer, Alex changed careers when he experienced how strength can transform your life. He's now a Strength Coach under the National Strength and Conditioning Association (NSCA), StrongFirst (SFG1), Functional Movement Systems (FMS), and a certified Precision Nutrition Coach (Pn1).