Tuck Crunch
The Tuck Crunch is a comprehensive bodyweight core exercise that engages the entire abdominal wall by simultaneously lifting the torso and knees together. It targets both the upper and lower abs while improving coordination and core stability.
Since the core is easily fatigued but recovers quickly, the AI analyzes your previous training volume to determine the optimal rep target for today's session. It also monitors your RPE feedback; if you report lower back strain, the app learns this pain association and instantly recommends spinal-friendly alternatives like the Dead Bug. Furthermore, the system integrates your recovery metrics to adjust intensity, ensuring you challenge your abs without compromising form or recovery.
Form Cues
- Draw your navel deeply toward your spine
- Lift your head, shoulders, and hips simultaneously
- Exhale sharply as your knees meet your chest
- Squeeze your abs at the top of the movement
- Lower your body slowly with control
- Don't pull on your neck with your hands
- Don't use momentum to swing your body up
- Don't let your lower back arch excessively at the bottom
- Don't hold your breath during the contraction
Common Mistakes
- Pulling on the neck
- Using momentum instead of muscle
- Arching the lower back
- Incomplete range of motion
- Rushing the lowering phase
Muscles Worked
This exercise primarily targets the rectus abdominis, effectively engaging both the upper and lower regions by bringing the rib cage and pelvis together simultaneously. The hip flexors play a significant secondary role in drawing the knees toward the chest, making it a functional movement for overall core strength.
Primary
Secondary
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