Nikki Reed swears by ''cheat'' days.

The 'Twilight' actress has been following a healthy lifestyle for over six years and admitted thinks dieting is all about ''the majority'' rather than ''moderation''.

She explained: ''I believe in the cheat day. Instead of saying, 'I'm going to have one pancake for breakfast and then one bite of a dessert at dinner', I try to eat clean six days a week and then on Sundays I have a free-for-all. Now, I definitely don't eat seven pizzas and 20 doughnuts, but I have days when I'm not constantly monitoring what I'm doing. It really is all about the majority.''

The 27-year-old beauty - who is married to 'Vampire Diaries' actor Ian Somerhalder - claimed she'd fail miserably if she tried to allow herself small treats during the week.

Writing in her blog for, she explained: ''Moderation is pretty hard for me. I wish I could be the woman that was like, 'Yeah, I can have cookies in my regular diet because I can just have one bite of a cookie and walk away'. Nope! When I see a tray of cookies I want the whole f**king tray. That's just how it is.''