This discipline of physical and mental practice originated in India about 5000 years ago. The word yoga means union and refers to the connection between body, mind and spirit. There are many types of yoga, ranging from relaxing or more dynamic classes, which require more of the body physically, but one thing is certain: whatever style you choose to practice, it will improve your health incredibly. If you think yoga is just touching your toes or standing upside down, it means that you are missing out on the best of yoga. The most common techniques practiced in yoga are postures (Sanskrit asanas), breathing exercises (Sanskrit pranayama) and meditation. If practiced regularly, yoga keeps you healthier. It can also help the problems and pains disappear, prevents the appearance of diseases related to body imbalance, provides greater mental clarity, balances emotions and much more.
Read on Wikipedia