Most Effective Ab Exercise: Bicycle
- Lie on the floor and lace your fingers behind your head.
- Bring the knees in towards the chest and lift the shoulder blades off the floor without pulling on the neck.
- Straighten the left leg out while simultaneously turning the upper body to the right, taking the left elbow towards the right knee.
- Switch sides, bringing the right elbow towards the left knee.
- Continue alternating sides in a 'pedaling' motion for 1-3 sets of 12-16 reps.