Zen Buddhism originated with Bodhidharma in 700 AD and later spread to Japan with the founding of the Rinzai and Soto sects in 1191 and 1227 respectively. Meditation is a core practice for Zen monks and nuns, starting with short sessions and increasing to days-long meditation. Over time, Zen grew in popularity in Japan as monasteries expanded and its peaceful philosophies attracted followers, including samurai who saw it as beneficial for battle. Life in a Zen monastery is highly regimented, from wake up times to duties, with meditation and nature as central focuses.