I hurt my hamstring 9 mos ago doing yoga and took a while off but still can't go back, what's going on?
Healing with scar... It is not uncommon for hamstring and other muscle injuries to lead to chronic problems. Muscle injuries initially heal with scar tissue. Without proper stretching and strengthening rehab exercises the injury can heal in a stiffened and weakened state and lead to chronic stiffness and risk for re-injury. You should see a doctor for further evaluation to rule out more serious injury and guide rehab.