Yoga, in general, is a spiritual practice or discipline that helps the individual unify his/her body, mind, and heart.Yoga is a direct experience of the vast interrelatedness of all life and of all things. You will feel at peace at the end of a yoga class because there is a natural realignment of your body which lea. If you stay with yoga long enough, you may discover a "spiritual awakening" (for lack of a better phrase.) You will find out that who you are, is not just your body, and not just the conversations in your mind.
Yoga is about transformation, not hamstrings, but along the way we have to take care of them. This is not dogma, but a direct experience. Yoga will open your eyes to things you have not experienced before. It will take you beyond the mundane survival level and into a whole new appreciation of life