Jennifer Aniston has always showed a rocking body. The former Friends actress promotes a healthy lifestyle, but reveals at one point she was so hungry she couldn’t help but indulge herself on a McDonald’s Big Mac…which did not end well for her.

According to Access Hollywood, Aniston and her stylist Tina Turnbow sat down with New York Magazine where Aniston dished on her own beauty secrets and her failed attempt at eating junk food.

“I'll never forget when Justin and I were on a road trip and we were so hungry,” she recalls. “The only thing around was McDonald's. I think I ordered a Big Mac. Wow, my body did not react well to that!”

Continuing she notes,“It was like putting gasoline in a purified system. I am always trying to eat organic and natural foods, so that just made my stomach turn and made me feel terrible. And I think what you put in your body, as well as stress, is reflected in the quality of your skin.”

Aniston, who is the new spokeswoman for Aveeno, confessed that the simplest way to reveal flawless skin is simply in drinking lots of water, getting enough sleep and exercise.

Image: NBC