There are very few exercises that challenge your core muscles and improve your stability as well as the L-Sit. This is how you do it
Master the L Sit and Improve Your Core Strength
Give Planks a Rest. Try the L-Sit for Core Strength and Stability
Core Exercises: 6 workouts to tighten your abs, strengthen your back, and improve balance - Harvard Health
L Sit Progression + 10 Steps To Improve - K Squared Fitness
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Core Strength Benefits and Exercises to Improve Your Workout - The New York Times
L-sit Progression Plan - PHD
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