Here's one reason to hit the gym on Christmas morning

PHOTO: MIKE ROSENTHAL

Khloe Kardashian's transformation from social scenester to bonafide gym rat has been nothing short of spectacular. A serious love of Oreos aside (but really, who can blame her?) she's encouraging her formidable fan base to live healthy and active lives. Her latest photo series, shot by Mike Rosenthal, shows just how well that change is working for her.

PHOTO: MIKE ROSENTHAL

These photos are reason enough to stop thinking about your looming Christmas feast for an hour or two and hit the gym first. Repent your Christmas sins before they've even happened. It'll make those second and third servings taste a little bit sweeter.