back leg muscle, hamstrings is very important for you to keep good condition of your knee and lower back.

the exercise I recommend is very effective for the people with knee pain when bending your knee or step down on the stairs.

the combination between stretching and exercises can give you no pain around your knee!!

https://youtube.com/shorts/ksE3qlW1SW4?si=EmeXc0UKcdk4OuQL