We’ve noticed two yoga trends lately: more music played during class, and more weekend nighttime classes that serve as a kind of social happening. These phenoms collide at Laughing Lotus Yoga Center in the Mission, where Midnight Yoga has been bringing in the healthy crowd every Friday at 10 p.m. for a two-hour vinyasa class accompanied by local DJs and live music ranging from jazz to African. 3271 16th St., 415-355-1600, laughinglotus.com