Clients respond -- at a recent New York City session, one member began belting out the chorus to Kelly Clarkson's "Since U Been Gone" while doing a set of skull crushers.
"A big part of what we do is fun," said Gonzalez. A former actor, Gonzalez, now 33, began working for Barry's in 2004 after he attended a class and "fell in love with it." "We look for entertainers," he said. "Often times, the personal trainer who has the best reputation and might have a ton of knowledge just falls flat, isn't fun and can't carry a class."
Fun, yes, but at a price: Barry's New York location charges between $32 and $19 per class. While many NYC gyms range from $50 to $100 a month, Barry's monthly membership currently costs $450.
And then there's the physical toll. All the top 40 hits, celebrity work out partners and cheerleader instructors don't make sprinting at nine miles per hour at a 10-percent incline any less grueling, as this reporter attempted to do at a New York City class last week. But then, that's the point.
"I've done about 120 marathons, and if you're doing a 10-percent grade at nine miles per hour, there are world class athletes that would have a problem with that," said Michael Dupper, an assistant professor in the department of health at the University of Mississippi. He's never been to Barry's Bootcamp but noted, "the premise seems pretty sound."
"These people are going to get a tremendous workout," he said, "if they can survive."