London, Sep 19 (Inditop.com) Hollywood actress Jennifer Aniston keeps fit by running around a horse track early in the morning.

The 40-year-old actress amazed crew on the set of a new movie, by getting up at 5 a.m. and running laps around New Jersey’s Monmouth Park race course, which is near the shooting location, reported contactmusic.com

“She showed up every morning at 5 a.m. to run laps on the giant oval for a solid hour before cameras rolled,” said a source.

“She’s really disciplined about keeping fit. She’d get there before everyone else and zip around that huge track like a winner,” the source said.