Now a day alarming awareness was observed in health and natural remedies among people by yoga and pranayama which was originated in India thousands years ago. It has been established as an effective method for improving health in addition to prevention and management of diseases. With increasing scientific research in yoga, its therapeutic aspects are also being explored. Yoga is reported to reduce stress and anxiety, improves autonomic functions by triggering neuro-hormonal mechanisms by the suppression of sympathetic activity, and even, now-a-days, several reports suggested yoga is beneficial for physical health of cancer patients also. This article mainly focus on how yoga is helpful in maintain physical and mental health.