How to do a bicycle crunch? Here's a breakdown of how to do this belly-burning exercise the right way: 1. Begin by lying flat on your back on a mat or a comfortable surface. 2. Now, place your ...

"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 ...