It's Raining Jake Gyllenhaal

Yowzas! It’s a Gyllenhaal-fest here today!

Cycling enthusiast Jake Gyllenhaal bikes his cough away through the hills of Griffith Park on Tuesday afternoon with pal Austin Nichols.

Buff Best buddies Jake and Austin (both 26) co-starred together in global-warming disaster flick The Day After Tomorrow in 2004.

The pair have also shared clothes in the past and been spotted around West Hollywood together.