How to do a Crunch
Start laying flat on your back with your legs extended in front of you and your hands behind your ears. Squeeze tight through your core to lift your legs and shoulder off the floor. Bring your knees and elbows towards each other (touch them if you are able). Return to the starting position with control.
Muscles used in a Crunch
Core - Abdominals
Movement patterns used in a Crunch
Miscellaneous