There's a right way and a wrong way to a flat belly.
Stability ball pushups. This great exercise works your prettymuch everything: core, back, chest and your arms! Start out with the stability ball on your thighs and do pushups that way. When you get stronger, work up to having the stability ball all the way at your ankles! Get toned and eat up your body fat little by little:)
Superman Booty Lifts : Lying on your belly and doing double leg lifts really works your hamstrings, booty, and back. You'll be in superhero strength in no time! Lie on your belly and hold an exercise ball between your feet. Engage your abs and extend your arms straight out in front of you. As you inhale, squeeze the ball and lift your knees, arms, and chest off the floor. Hold for a count of 10 and then slowly release your body back to the floor. Repeat for a total of 10 lifts.