Jennifer Aniston works out at 3 a.m. every day, reports.

The 40-year-old actress, who is currently filming The Bounty in New York, wants to stay in shape despite her hectic schedule — so she gets up in the middle of the night to exercise.

“There are a lot of early starts on set, so she has had to get up at 3 a.m. to get two hours in the gym before filming at 5 a.m. She is supposed to be playing a 35-year-old, and is concerned she won’t look the part now that she’s 40.

“It isn’t just for this part, either. Every time she is offered the role of a mother, she turns it down — she wants the young characters.”

Aniston even flew her personal yoga instructor Mandy Ingber from Los Angeles to New York so she can have private sessions.