Jennifer Aniston’s 14 hour work days finally caught up to her on the set of her new film, “The Baster“.

“She frantically yelled out, ‘I need a break!’ She said she felt dizzy and light-headed. She’s usually so calm,” says an on-set informant. “She rushed to her trailer to rest and collect herself, but she lost her balance and nearly keeled over. The collapse really shook Jen up. It was a wake-up call that she needs to slow down.”

Of course this source also claims that Jennifer is plagued with sleepless nights because of her stress of being alone at 40.

jennifer aniston collapses