I saw a stretch assistant to gain 'extreme flexibility'. Did it work?

Physical Therapy for Knee Pain: A Hinge Health Guide

I saw a stretch assistant to gain 'extreme flexibility'. Did it work?

Anna Murphy's Instagram, Twitter & Facebook on IDCrawl

Anna Murphy's Instagram, Twitter & Facebook on IDCrawl

What did you do to get a full splits stretch? - Quora

Health, The Times & The Sunday Times

Does Stretching Increase Flexibility?

17 Best Stretches for Hip Pain to Release Tension

20 Best Core Workouts For Women - Core Exercises For Stronger Abs

Does stretching tear muscles and therefore help to gain muscle

Hamstring Exercises and Stretches to Stay Strong, Flexible, and

What You Can & Can't Achieve With An Assisted Stretch

Stretching: The Truth - The New York Times