Kim Kardashian Kris Humphries gym workout spandex big butt engaged studio city

The couple that works out together works out, hopefully.

In the wake of Kim's cheating scandal, Kim Kardashian and Kris Humphries got in a strenuous work out in Studio City on Monday. We love that Kim isn't afraid to break a sweat in front of her man ... though it looks she didn't achieve much more than a glow. She's still got her hair down!

Kris, on the other hand, is soaked. Even though he's a reality star now, he's still gotta keep up in the NBA!

Bret Lockett, the NFL star who accused Kim of cheating on Kris, has admitted that he never met Kim in person, but ...