The Effects of Calisthenics and Some Exercises

7. Crunches

Crunches are a calisthenics exercise that focuses on the upper abdominal muscles. To do crunches, start by lying on the floor and bending knees. Place your hands behind your head or next to the body, depending on how much resistance you want. The higher you place your hands, the more challenging the exercise becomes. Slowly curl the shoulders off the floor, then roll back to the original position. You can rest the legs on a bench to increase the difficulty.