If you’re a tiny chick, especially if you’re not an exercise nut, one donut a day(not exactly gluttony territory) for 2 weeks will wreck your shit.  Yep. Three days is the most I ever allow myself. You know I have a bit of a sweet tooth/dessert tooth, and while I am normally fine with, say, a small piece of cookie cake or two peanut butter cups or whatever, occasionally I get a craving for something like a lemon fruit pie from 7-11 (I know, and I don't give a shit, because they are fucking delicious); 400 calories for that one small hand pie full of lemon curd, with a sweet glaze on top. Or I discover a new treat--a few weeks ago I bought an Edward's "Cookies and Cream" pie, which is normally not my thing (I like Oreos okay, but can basically take or leave them, and I've never gone in for "cookies and cream" desserts, but the pies were on sale and I thought my family would like it) but holyshitholyshit are they good; one of the few desserts where I feel like I could genuinely eat the whole thing. So when this happens, I go to 7-11 and buy two or three lemon pies, and I have one per night until they are gone and then I'm not allowed to have more until the next month. Or I grab the Edwards pie from the freezer section, and I can have a big piece two nights in a row and then it's gone and no more until the next month. (My cravings aren't hormonal, I don't think, I just only let myself have this stuff once every four weeks or so.) For me one of the pleasures and benefits of keeping an eye on my calories, staying thin, is that I can enjoy these treats without a hint of guilt or worry. I can afford it...but I can't afford it every night, because yeah, when you're as small as I am, even two or three extra pounds show up. I've found that three days is the perfect number; not enough to make me gain weight but enough that I feel like I've had a real treat.