Beaches Hot Yoga's 90-minute hot-and-humid routine of poses draws a strong reaction from first timers. Love it or hate it, it's an intense practice that draws measurable results. That is, if you can get past the dizziness and nausea usually experienced by newbies. Instructors are tough, challenging students to push farther and calling out anyone playing it safe or wiping sweat (dripping is encouraged). While competition goes against the principles of yoga, a positive competitive spirit is definitely present here, and I like it.