Hayden Panettiere is a Fitness Freak

Hayden Panettiere (sans boyfriend Milo Ventimiglia) continues her daily workout regimen with a trip to her gym in Hollywood on Wednesday.

The Heroes hottie worked out for a good hour and then returned home.

Hayden‘s got a cool hoodie–the kind that zips up and into the hoodie!

10+ pictures inside of fitness freak Hayden Panettiere…