Squats. Yes, this leg day staple is a great way to work your entire body, hammering leg strength and building a solid midsection. It'll also burn more calories than you think, and ramp up your metabolism way more than, say, curls.

Does squats tone your stomach?

In order to really work your abs, make sure you do a full squat. While half-squats and quarter-squats may appear commonplace in gym a full squat will really work your abs or core. A push-up not only helps you to get a stronger upper body, but also a stronger more defined midsection.

What exercise burns the most belly fat?

Crunches:

The most effective exercise to burn stomach fat is crunches. Crunches rank top when we talk of fat-burning exercises. You can start by lying down flat with your knees bent and your feet on the ground.