Swami Sivananda relates hatha yoga to the four paths of yoga in this excellent lecture. He explains what hatha yoga is in relation to raja yoga. He describes how a hatha yogi, raja yogi, jnana yogi and a bhakta approach sadhana and how they achieve self-realization. If you have any confusion about the four paths and how they relate to hatha yoga, this lecture will answer many of your questions.
Swami Sivananda tells us about yoga in this lecture. Yoga helps with coordination and control of the subtle forces within the body. It brings perfection, peace, and everlasting happiness. It can help in business and in daily life. Yoga will give you a calm mind at all times. Listen to learn more about the benefits of yoga, control of the mind, guru, etc.