Model and actress Brooklyn Decker refused to do yoga with Jennifer Aniston on the set of Just Go With It because she felt intimidated by her co-star's ability - and body.

The 25-year-old admitted that she was "awestruck" when she met Aniston on set, and said that she would love the former Friends star to act as her body double.

Speaking to Women's Health, Decker said: "She's so active and had to be in a bikini for Just Go With It - she just had this glow about her. I was a bit awestruck! I was invited to do yoga with her on set but they had so many good yogis I was intimidated and chickened out.''

Despite being keen to stay healthy, Decker said that being on film sets makes it virtually impossible not to indulge in treats: ''Imagine the best junk food you've ever seen, available 24 hours a day - that's what sets are like. There are sweets and doughnuts in front of me all the time. My rule of thumb is that if I'm working, I eat healthily.

''I have such a sweet tooth that I can't let myself indulge because work is where I spend most of my time, so when I'm at work, no bad food.''