Sprawl'n'Stall - First off, having abs help ha ha. And well, I'm serious. Some people have so little muscle that getting lean just makes them look bony.
MMA training is great for abs, and direct ab work too of course.
But for some reason, doing VERY occasional intermittent fasting did the trick for me. Losing fat is easy up to a point, but to see abs, it used to be a 2 month attack I did twice a year. And overall watching what I eat. With IF, I eat good but whatever, and yet am usually leaner. Crazy.
And to me it’s just skipping a breakfast here and there! As breakfast are big meals for me, it did a big difference. If you are a small breakfast eater, you might not get the same results.
Also I used to eat a lot of cereals. I still do compared to most adults ha ha, but probably 60% less than what I used to do. Oatmeal instead.
No matter what method of “diet” you use it always comes down to calories in < calories out.