UFC superstar, Chuck Liddell and his girlfriend Heidi Northcott have given whole new meaning to the word “buff.” A viral video campaign surfaced near the end of last week of the couple working out in their home gym. Exciting news for Liddell fans looking to see how their favorite UFC fighter stays in shape. Even more exciting for the voyeurs of the world who want to catch a glimpse of Liddell and Northcott in the buff.

The couple appear to be working out in their home gym in nothing but their Reeboks. Yes, you heard me. The couple are working out naked, and while I have been trying to figure out why on earth anyone would want to get their man parts that close to a treadmill, there is some speculation that the stunt is a Reebok viral video campaign.

TMZ was the first to announce the connection with Reebok, one of Liddell’s sports sponsors. Neither Northcott or Liddell appears to be phased during the video, as if getting buff in the buff is just another workout. It makes me wonder if they were having coffee with the Reebok rep, when Liddell mentioned he and Heidi work out naked in their home gym every morning. A little light-bulb dinged over the rep’s head, and presto! A viral video campaign was born.

Even if you don’t find Liddell or Northcott attractive, seeing them naked in the gym made me want to go work out. Now if you’ll excuse me, I have a date with my treadmill. For the record: I’ll be wearing clothes. Lots of clothes.