FlexCrunches
Muscles worked
- Rectus Abdominis
- External Oblique
- Internal Oblique
- CategoryCore
- Default target4 sets × 15–20 reps
- EquipmentBodyweight
- Movement patternCore
- Training stylesHypertrophy
- LevelBeginner-friendly
Technique
Setup
Lie on your back with knees bent and feet flat on the floor. Place your hands lightly behind your head or across your chest.
Movement
Contract your abs to lift your head and shoulder blades off the floor. Slide your ribs toward your hips, then lower with control.
Form Tip
Do not pull on your neck. Think about 'closing the gap' between your ribs and pelvis. Exhale on the way up.
Increase Difficulty
Perform with legs in the air at a 90-degree angle or hold a weight at your chest.
Decrease Difficulty
Place your hands on your thighs and slide them toward your knees as you crunch.
Hear the cue
The trainer's spoken setup and form tip for this exercise — the same clips Flex plays in a session.