Alternating Abs Bicycle Kicks. In alternating ab curls you get to leave the foot of the leg you are not using on the floor. Utilizing a smaller range of motion bicycle kicks can be used as an alternative to standard leg raises.
You will perform this exercise as a variation on ab crunches. Be sure to alternate each side in a pedaling motion for 3 sets of 12 reps. Kick it up a notch.
Alternating ab curls are featured in the how to get a six packs ab workout.
Utilizing a smaller range of motion bicycle kicks can be used as an alternative to standard leg raises. The difference is that you always have both feet off the ground during these bicycle crunches. This makes bicycle crunches a bit harder than standard ab crunches. With bicycle crunches or bicycle kicks you extend your legs into the air like your pedaling a bicycle.