Slow things down and get a deep core workout with this variation on the traditional bicycle crunch. It adds resistance for a bigger burn. Abs workouts are often about volume, like knocking out 50 ...

"Laying on your side as you do crunches will also target your oblique muscles," says Hess. Lifting your head and shoulders to one side or the other or engaging in bicycle crunches by involving ...

No matter which variations you follow, crunches have the advantage over sit-ups of being able to better target abdominal muscles. "Because the movement is smaller, you can control momentum more," ...