The Sanskrit word yoga has many meanings, and is derived from the Sanskrit root "yuj," meaning "to control," "to yoke" or "to unite." Translations include "joining," "uniting," "union," "conjunction," and "means."

Outside India, the term yoga is typically associated with Hatha Yoga and its asanas (postures) or as a form of exercise. Someone who practices yoga or follows the yoga philosophy is called a yogi or yogini.

Traditional Hatha Yoga is a holistic yogic path, including moral disciplines, physical postures (asana), purification procedures (shatkriya), poses (mudra), yogic breathing (pranayama), and meditation. The Hatha yoga predominantly practiced in the West consists of mostly asanas understood as physical exercises. It is also recognized as a stress-reducing practice.

Hatha represents opposing energies: hot and cold (fire and water, following similar concept as yin-yang), male and female, positive and negative. Hatha yoga attempts to balance mind and body via physical postures or "asanas", purification practices, controlled breathing, and the calming of the mind through relaxation and meditation. Asanas teach poise, balance and strength and are practised to improve the body's physical health and clear the mind. (more)