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System of Sleek
Supermodel Doutzen Kroes training with Michael Olajide, Jr.

News flash: Victoria?s Secret models aren?t born with six-packs.

Sure, genetics are working in their favor, but for fine-tuning, a handful of the Angels (oh, and Eva Mendes, Hugh Jackman and Mark Wahlberg) trust System of Sleek--the new interval training method at Chelsea?s Aerospace High Performance Center.

Former professional boxer Michael Olajide Jr. uses moves he perfected in the ring and combines them with basic conditioning exercises like jumping rope, boxing, push-ups and lunges. Think that sounds like every other boot camp you?ve tried? Here?s the kicker: It?s divided up into four laser-focused, 30-minute circuits.

Even though we were heaving out halfhearted crunches by the end of the abs-only sesh, Olajide?s calming vibe (ahem, telling us how beautiful we look) got us through.

The two-hour class takes place on Monday nights at 6:30 p.m. ($40), but if you?d rather ease into it, you can attend singular portions ($20 each à la carte). And for the jet-setters (okay, or homebodies), the whole program is also available in a new DVD box set ($60).

You may not rock a runway, but you can certainly have killer abs come itty-bitty bikini season.

322 W. 13th St. (between Eighth and Ninth aves.);

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