Traditional hatha yoga is a holistic yogic path, including disciplines, physical postures (asana), purification procedures (shatkriya), poses (mudra), 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 yoga is one of the two branches of yoga that focuses on the physical culture, the other one being raja yoga. Both of these are commonly referred to as sadanga yoga, i.e., yoga of six parts ('sad' meaning six and 'anga' meaning limbs). The six limbs are described below in detail. Svatmarama emphasizes many times in his Hathapradika text that there is no raja yoga without hatha yoga and no hatha yoga without raja yoga. The main difference is that raja yoga uses asanas mainly to get the body ready for prolonged meditation, and hence focuses more on the meditative asana poses: Lotus Posture (padmasana), Accomplished Posture (siddhasana), Easy Posture (sukhasana) and Pelvic Posture (vajrasana). Hatha yoga utilizes not only meditative postures but also cultural postures. Similarly, raja yoga's use of pranayama is also devoid of extensive locks (bandha).
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 practiced to improve the body's physical health and clear the mind in preparation for meditation.
Hatha yoga consists of six limbs focused on attaining samadhi. In this scheme, the six limbs of hatha yoga are defined as asana, pranayama, pratyahara, dharana, dhyana and samadhi. The basic text of hatha yoga is Hathapradipka by Swatmarama, a grand disciple of Sahajananda (from the lineage of Sopana, the younger brother of Jnaneshwar Maharaj of Alandi near Pune). An important part of hatha practices is awakening of Kundalini. The signs of success in hatha yoga are slenderness of the body, cheerful face, hearing mystical sound, bright eyes, sense of well-being, control over the bindu, increase in gastric fire and purification of the nadis.
