Would You Do...This Hunk, All Sweaty and Wet?

Can you guess the celeb who's pulling a Lance Armstrong?

See, L.A. peeps, good things happen when it rains, too.

While Matthew McConaughey and Alexander Skarsgård prefer to get their sweat on when it's sunny, this hot dude likes to show just how macho he is while working out in the stormy weather. And trust us, we have no complaints here!

Check out this Hollywood actor taking an uphill ride in Santa Monica yesterday, pumping away on his bike. Totally yum!

But do you know whose sexy calves we're looking at?

No, it's not Zac Efron, like we thought for the first couple minutes while we were wiping the drool off our faces.

It's Fergie's hubby, Josh Duhamel.

Working out must be going OK for Joshy if the 38-year-old Transformers star can almost pass for a 22-year-old heartthrob.

While many other celebs were surely spending their 4/20 in a more relaxed way yesterday, Joshy decided to work on his fitness instead of his lung tolerance.

This stud better keep his heart rate up if he really wants those seven children with his wife, who looks totally smokin' BTW on the May issue of Elle.

Glad J.D has decided to focus less on stripper scandals and more on bikes. Bet Fergie's happy!