Barry's Bootcamp
During this one-hour slot, half of the participants run, sprint and jog on treadmills while the other half do floor work (squats, free-weight lifts, ab exercises)—switching every 15 minutes. And no, the teacher doesn’t rip on you. The exception is Joe Buffa—if you start slacking, he might yell, “Remember, you skipped brunch for this! Prove that it was worth it!” 135 W 20th St at Sixth Ave (646-559-2721) • 1 York St between Sixth Ave and St. Johns Ln (646-569-5310) •barrysbootcamp.com. Times vary; $34.