Five Core Moves I Actually Do to Flatten My Stomach

I have wasted a lot of hours on ab exercises that did nothing, so let me save you some of that time. After years of trial and error, I keep coming back to the same five moves, and not because they're magic. They're just the ones that actually make my core feel worked the next morning.

Before we go further, one honest thing: no exercise on this list will "spot reduce" the fat sitting over your stomach. That's not how bodies work, and anyone selling you a belly-melting routine is selling you a fantasy. What these moves do is build the muscle underneath. When the layer on top eventually thins out from eating sensibly and moving more, there's something there worth seeing. That's the whole deal.

The plank, because it never lies

If I could only keep one core exercise, it'd be the plank. Forearms on the floor, legs out behind you, body held flat like a tabletop. That's it. No movement, no momentum to cheat with. You either hold the position or your hips sag and you've stopped working.

I aim for 30 to 60 seconds, and I stop the second my form breaks rather than grinding out ugly extra time. The plank hits the front of the core and the muscles along your lower back too, which matters more than people think. A strong back is what keeps your posture upright when you're tired. If holding a straight plank on the floor wrecks your wrists, an ab roller or a set of push-up handles can take the pressure off and let you hold position longer.

Stability ball crunches

Regular crunches on the floor never did much for me. Doing them on a exercise ball changed that completely. The wobble forces the deep core muscles to fire just to keep you balanced, so you're working before you even start the crunch.

I do sets of about twelve slow reps, focusing on curling up rather than yanking my neck forward. Rest, then go again. The reduced base of support is the whole point here. You're unstable, so you work harder, and you feel it in places a flat-floor crunch never reaches. A decent ball costs almost nothing and doubles as a chair when you want to fidget at your desk.

Lying leg raises for the lower abs

The lower stomach is where most people, myself included, struggle to feel anything. Leg raises fixed that. Lie flat, lift your legs to roughly ninety degrees, pause, then lower them back down slowly until they're hovering just above the floor.

Here's the key: don't let your heels touch down between reps. The moment they rest, the tension drains out of your abs and you're basically resting mid-set. Keep them hovering and the muscles stay switched on the whole time. If your lower back lifts off the floor, put your hands under your hips for support, or bend your knees slightly until you build the strength to do them straight. A folded yoga mat under your tailbone makes the whole thing far less punishing.

The bicycle for the obliques

The bicycle is the one I'd recommend for the sides of your waist. Lift your legs a little off the floor, draw one knee in toward your chest, and twist your opposite elbow across to meet it. Then switch. It's a steady, controlled pedalling motion, not a frantic one.

I do ten reps per side without stopping, rest, then run a second set. Going slow is more effective than going fast here, because speed lets you swing through it with momentum instead of muscle. If you want to add a little resistance, holding a light weight or wearing ankle weights turns this into a much tougher exercise without changing the movement at all.

Accordion sit-ups to tie it together

Last on my list is the accordion sit-up, which is just about the simplest move here. Lie flat, then bring your upper body and your knees up to meet in the middle at the same time, folding shut like an accordion. Pause at the top, lower back down, repeat.

It works the whole front of the core in one motion, top and bottom together, which is a nice way to finish a session when you're already tired. I don't rush these. A controlled fold beats a sloppy bounce every time.

How I actually use these

I run through all five maybe three times a week, not every day. Abs need recovery like any other muscle, and hammering them daily just left me sore and no stronger. Two or three sets of each is plenty when the form is honest. A set of resistance bands is the only extra kit I'd bother adding, since it lets you load these moves up gradually as you get stronger.

And I'll say it one more time because it's the part people skip: what's covering the muscle matters more than the muscle itself when it comes to how your stomach looks. These moves build the foundation. Sensible eating and regular movement reveal it. Do both, give it real time, and you'll get there. Skip the eating part and you'll have a strong core nobody can see, which is fine, but probably not what you came for. None of this is medical advice, so if you've got a back issue or you're new to all of it, ease in slowly and check with a professional first.