Yoga is a 5000 year old Indian body of knowledge. It is a group of physical, mental, and spiritual practices or disciplines in Hinduism, Buddhism, and Jainism. Yoga is all about harmonizing the body with the mind and breath through the means of various breathing techniques, body postures (asanas), and meditation. Among the most well known types of yoga are Ashtanga, Hatha, and Kundalini. The physical benefits of yoga include increased flexibility, strength, and balance while the mental benefits include stress reduction, improved sleep patterns, and relaxation.