Crunches
10 reps
Curl your ribs toward your belly and lift only your shoulder blades off the floor.
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ABS
Crunches
A classic bodyweight ab exercise that isolates the abdominals. Unlike a sit-up, you only peel your shoulder blades off the ground rather than coming all the way up, which keeps constant tension on the abs and makes it a great starting point for core strength.
How to do it
- 1
Lie on your back with knees bent and feet flat on the floor.
- 2
Rest your hands lightly behind your head and press your lower back into the ground.
- 3
Contract your abs to draw your lower ribs toward your belly button, tucking your chin slightly.
- 4
Lift until your upper back clears the floor, holding the squeeze for a beat.
- 5
Lower your shoulders back down slowly while keeping tension in your abs.