Jake Gyllenhaal: Livestrong Workout!

Jake Gyllenhaal wears a Livestrong wind breaker while going for a morning run on Saturday (January 8) in Hollywood, Calif.

Later that evening, Jake attended the Palm Springs International Film Festival where he presented an award to his ex (and Brothers co-star) Natalie Portman.

Jake just arrived back in Los Angeles on Friday after spending time in New York City, where he was spotted on the subway taking the Q train!

10+ pictures of Jake Gyllenhaal on his morning workout…