Short instructional clip (YouTube) by Ben Greenfield on how to perform an L sit. The speaker gives brief form cues: keep the body shaped like an "L" (avoid butt far behind and bent knees), push the hips/butt forward so legs form a 90° angle with the torso, and open the chest.
For the L sit. You want to look like an L, so you don't want your butt far behind with bent knees. You want to push your butt forward. And you want to be at 90 degrees. You don't want to be like this. Push your chest open.
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