Bikram Yoga Delray Beach's instructors coach students of all skill levels through a sequence of physically demanding yoga poses that can improve stamina and promote healthy organ function. Yogis lead each session from atop a small raised platform at the front of the mirror-lined room, where they motivate students with encouraging words and choreographed cheers. Each 90-minute class, like a fire-eaters' convention, meets in an intensely heated space and consists of two calming breathing exercises and 26 postures. Students transition between standing bends, seated stretches, and reclining naps during each session, methodically working muscle groups across the entire body while flooding cells with torrents of freshly oxygenated blood. While pupils stretch and bend, instructors carefully monitor each student's form while doling out a steady stream of verbal instructions and experimental knock-knock jokes.