Burn Your Lower-Belly Fat Fast with these 6 Lower Ab Exercises

5. Reverse Sit-ups

Do 2-to-6 sets of 8-to-20 reps 2-to-4 days per week.

Raise your knees up and curl your hips up until your knees touch your elbows and then lower your knees back downslowly until your feet almost touch the floor. DON'T let your feet touch the floor.
Make sure your hips and butt come up off the bench as you raise your knees up to touch your elbows.
Don't use your arms to pull yourself up. Your hands are to only be used as support hooks to keep you from falling off the bench. It's okay to use your arms just a little bit to help you but Don't pull with your arms too much because you won't get a good lower ab workout.
Too Easy? Use a higher incline and/or use a weight between your ankles to make this exercise tough enough where you can only do 8-to-20 reps at a time or move on to hanging lower abs
Too Hard? Do the beginner lower ab crunches, raise your knees up ½ way or have a partner slightly help raise up your knees to touch your elbows.