Hath yoga focuses on physical health and controlling the breath. It involves asanas, pranayama, mudras, and bandhas to purify the body. Key texts on Hath yoga are the Hatha Yoga Pradipika and Gherand Samhita. Hath yoga works through the sun and moon energy channels in the body. It is related to controlling the body, while Raj yoga focuses on the mind, and both are needed to achieve their goals. Elements of Hath yoga include purification through practices like shat karma and various poses, breathing techniques, mudras, and bandhas to awaken the central energy channel and prepare for meditation.