Yoga is an ancient Indian form of balancing mind and body through breath control and a series of asanas. It aims to attain the unity of mind, body and spirit through asanas, breathing and meditation. Asanas are gentle stretching movements designed to rejuvenate the brain, spine, glands and internal organs. They work by increasing the blood and oxygen supply to these areas by stimulating them with a gentle squeezing action. Asanas help to relax body and mind together. Stretching helps to relax and tone the muscles to improve the circulation, to regain the vital force or energy, lose or gain weight, feel and look young and improve concentration.