L Sit
The L-Sit is an advanced isometric bodyweight exercise that builds tremendous core compression strength and shoulder stability. By suspending your body above the floor with legs extended forward, it targets the abdominals, hip flexors, and triceps simultaneously.
Since the L-Sit is an isometric hold where every second counts, the AI analyzes your hold duration trends alongside RPE to precisely gauge your core endurance progress. If your HRV or recovery data indicates upper body fatigue, the system can suggest modifying the duration or regressing to a tuck variation to prevent strain on the shoulder joint. Over time, the app learns your specific endurance thresholds, optimizing hold times to push your limits without compromising form.
Form Cues
- Press your hands firmly into the floor to actively depress your shoulders.
- Lock your knees and point your toes to keep your legs fully engaged.
- Squeeze your legs together and tighten your quads.
- Pull your belly button toward your spine to compress your core.
- Don't let your shoulders shrug up toward your ears.
- Don't allow your knees to bend or legs to separate.
- Don't hold your breath; maintain shallow, controlled breathing.
- Don't let your hips swing backward behind your hands.
Common Mistakes
- Shrugging shoulders due to weak depression strength
- Bending knees from tight hamstrings
- Leaning too far backward
- Holding breath during the hold
Muscles Worked
This exercise primarily targets the rectus abdominis and hip flexors, which must contract intensely to keep the legs lifted parallel to the floor. Secondary emphasis is placed on the triceps and anterior deltoids, which are responsible for stabilizing the shoulder girdle and supporting your entire body weight.
Primary
Secondary
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