The phrase "to do yoga" means to practice the ancient Indian physical and mental exercise system that aims to promote harmony between the mind, body, and spirit. Yoga involves various postures (asanas), breathing techniques (pranayama), meditation, and relaxation methods, all of which are designed to improve overall health and well-being. When someone "does yoga," they are engaging in these practices with the intention of achieving physical fitness, stress reduction, mental clarity, and spiritual growth.