Freckled fox Jennifer Kali can certainly go the distance. An avid runner and exercise fanatic who works as a personal trainer in New Jersey, Jennifer excels at giving guys serious cardio workouts. Surprisingly, this is the first time she's ever posed. "I'm comfortable with it," she said. "In fact, f ...riends nicknamed me 'nakey' because I walk around my place naked all the time." If you want to see her sweat outside the gym, you have to take your appearance seriously, though you don't necessarily have to be a jock; just confident and funny. Even better, you can also borrow her Playboys, since she's a subscriber. But that's probably the last thing you'd want to look at while staying at her place.

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