The Flexibility Guy - Coach Elia on Instagram: "One of the best hamstring stretches! This is a highly effective stretch to improve hamstring and knee extension flexibility using an elastic band. The key idea is simple: the band helps you extend the knee further, allowing a deeper and more controlled hamstring stretch. Here’s how it works. • Start with one leg in front and one leg behind • The back leg stays straight, the front leg starts bent • Wrap an elastic band around the front knee • Fold y