Pranayama involves breathing techniques that aim to distribute energy throughout the body. It uses inhalation, exhalation, and breath retention. Specific techniques include abdominal breathing, thoracic breathing, clavicular breathing, and nostril breathing. Pranayama has physical and mental health benefits like reducing stress, improving lung capacity, and increasing memory. Precise hand positions called mudras are used along with breathing to target different areas of the body or energy channels.