When Lauren Brenner struts down the streets of Manhattan, her body-carving credentials as a former fitness model, personal trainer, and tennis star at Syracuse University are often on vivid display. Just don't look at her wrong because Brenner is also a drill instructor who can whip your ass into shape, or make you cry trying.

The creator of the Pure Power Boot Camp, Brenner has a deep respect for the armed forces.

"I knew that if New Yorkers could get a smidge of the core values of the military, we'd be happier and more productive."

Lauren may wear a camouflage bikini top while barking orders to "drop and give me 20!" but the "cadets" shouldn't even try to tread there. "I will never date any student," she says. "I take the boot camp way too seriously for that."