These are L-Sit friendly exercises. With distinct difficulty, executing them will improve your shape, making such callisthenic position easier with time and practice.
The L-Sit position is a quite complete exercise, activating arms, chest, abs and leg muscles. You can also checkout the L-Sit progression for those starting this journey.
After mastering the L-Sit, have a look on L-Sit variations.
See exercises for other collections.