Tuck L-sit Pull-Ups (shoulder grip)

How to get the most out of a pull-up workout - Quora

The 6 Best Pull-Up Progressions for Upper-Body Strength

Give Planks a Rest. Try the L-Sit for Core Strength and Stability

L Pull-Up (Calisthenics)

Back Rows Parallel Bars

Tuck Planche 101 – Kensui

Strengthen your core, improve your stability with the L-Sit

Tucked L-Sit Pull Up - Intermediate Regular Grip

Korser Pull Up Bar Station, Portable Foldable Pullup

Forget the gym — 5 full-body strength exercises for beginners