Hamstrings
Body region：Thigh
Tight back of the thigh, cannot touch the floor when bending forward
Function
Biceps femoris, semitendinosus and semimembranosus. Flex the knee and assist hip extension.
Common causes
Prolonged sitting, sprinting, insufficient warm-up before exercise, and poor flexibility.
Massage and stretching
- Heel of the hand pushes from behind the knee toward the buttock
- Supine leg-raise stretch
Related acupoints
- Weizhong (BL40)：Midpoint of the crease at the back of the knee
- Zhibian (BL54)：Upper buttock, about 3 cun lateral to the sacrum
Related meridians
Bladder Meridian of Foot-Taiyang
Posture and muscle patterns
- Lower crossed syndrome (pelvic tilt)
- Deep buttock and sciatic-like pain
- Knee pain and runner's knee chain