10 Fat Burning Ab Exercises

2. Bicycle Crunches

This exercise is perfect for ab toning because it engages all the core muscles including the rectus abdominis, lower back, obliques, and transversus abdominis muscles. In other words, say bye-bye to muffin top. To do a bicycle crunch, lie face-up on your mat with your legs stretched out in front of you. Place hands behind your head, lifting your head. Raise your legs up to a 45-degree angle and bring your left knee to your chest. At the same time, twist, bringing your right elbow to your left knee. Switch sides and repeat the motion with your right knee and left elbow. This is one rep. Do three sets of 20 reps.