VIDEO: Randy Couture gets 'Physical' on 'Lip Sync Battle'

The secret is out on how UFC Hall of Famer Randy Couture stays in such great shape.

No stranger to heated competition, the 52-year-old Couture stepped on to Spike TV's "Lip Sync Battle" stage with a stirring rendition of the Olivia Newton-John hit "Physical."

If you want to see a two-time world champion martial artist prancing around in shorts that are unquestionably too short, check out the preview clip below:

Perhaps Couture can take a crack at "Xanadu" next.

- With h/t to BloodyElbow.com