: Regular practice increases flexibility in the hamstrings and range of motion in the hips.

How to Do a Single Leg Stance: Tips and Variations - Hinge Health

“If you are flexible enough you should be able to keep this leg completely locked out at 90°... this works on activating your core during any hip movements.” YouTube · Mountain Tactical Institute · 14 years ago Common Mistakes and Pro-Tips

: Effectively strengthens the deep core muscles and lower rectus abdominis, which are often difficult to engage with standard crunches.