Yoga is an age-old practice that was developed for the betterment of human beings through personal insight. The root of its inception dates back several millennia and continues to reach us in our daily lives, where thousands of people still practice it across the globe. Ramiro Calle has practiced and studied yoga for more than 60 years, and his in-depth knowledge walks us through the various traditions of yoga: from Patañjali or Samkhya philosophy, to tantric yoga or shaivism, hatha, kundalini, or mantra-yoga, all the way up to the sport-like practice of yoga that can be found in modern-day gyms. Through it all, Ramiro Calle is able to guide us toward a better understanding of India's spiritual teachings.