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Exercise · Core

L-Sit guide

The L-Sit is a advanced-level isolation bodyweight lift that trains the Lower Rectus Abdominis. Use it when you want more core work with no extra kit. Keep the range honest, add load only when every rep looks the same.

TargetLower Rectus Abdominis
SecondaryCore
EquipmentBodyweight
MechanicsIsolation
LevelAdvanced
Sets × reps3–4 × 8–15

What muscles does the l-sit work?

The L-Sit primarily trains the Lower Rectus Abdominis, with the core as the target group. Train it as part of a balanced core routine.

How do you do the l-sit?

To do the L-Sit: clear enough floor space that you can finish the l-sit without hitting anything. brace, then move; move the load with the lower rectus abdominis. if another muscle takes over, shorten the range until lower rectus abdominis is doing the work; control the lowering half. a bounce at the bottom is a missed rep on the l-sit; stop 1–2 reps before form breaks. add weight or a harder variation only after every working set looks the same.

  1. Clear enough floor space that you can finish the l-sit without hitting anything. Brace, then move.
  2. Move the load with the lower rectus abdominis. If another muscle takes over, shorten the range until lower rectus abdominis is doing the work.
  3. Control the lowering half. A bounce at the bottom is a missed rep on the l-sit.
  4. Stop 1–2 reps before form breaks. Add weight or a harder variation only after every working set looks the same.

What are the most common l-sit mistakes?

  • Turning the l-sit into a momentum drill. — Slow the first two seconds of the lowering half until the lower rectus abdominis stays tense.
  • Cutting the range short to move more load. — Own the longest range you can keep tidy. Load comes after range.
  • Letting the bodyweight dictate sloppy setup. — Reset stance, grip and brace before every set, not after the first ugly rep.

L-Sit alternatives

L-Sit FAQ.

What muscles does the L-Sit work?

The L-Sit primarily targets the Lower Rectus Abdominis, training the Core as the main muscle group.

Is the L-Sit a compound or isolation exercise?

The L-Sit is an isolation exercise — it focuses on one muscle, which is useful for targeting and bringing up weak points.

What equipment do I need for the L-Sit?

You need no equipment — just your bodyweight. Difficulty is rated advanced.

What are good alternatives to the L-Sit?

Good core alternatives include Plank, Crunch, Side Plank.

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