Yoga is a mind-body practise that can be traced back over 5,000 years to the Indus Valley. The term yoga is a Sanskrit one which translates roughly to unite, and what is united are the body, mind, and spirit. The practitioners of yoga are referred to as yogi (for men) and yogini (for women). In Hinduism, the first practitioner of yoga was Lord Shiva, who is known as the Adiyogi. From this origin, yoga developed into a philosophy and its practises were codified by an ancient sage named Patanjali.