Okay I'm going to say I'm 100% convinced that my recent weight struggles were BECAUSE I gave up chocolate.
My work trousers are size 12. When I first got them, within the first few months, I had to take in the waist about 8cm.
Last summer I gave up chocolate and crisps. My weight ballooned until not only did I have to take out all the tucks in my waistband, it got so bad that I couldn't even zip it up anymore. I had to just lock the zip halfway.
Since giving up chocolate wasn't making me lose weight, a couple of months ago I went back to buying chocolate and crisps. My trousers now fit. I'm pretty sure I'm consuming more calories now than I was when I gave up (the only other junk I bought was the biscuits I have at breakfast). I eat pretty much the same meals in the same portions every day, I am a creature of habit. My tummy hasn't gone down enough to take in the waist again, but I can do up the zip comfortably. And I've been keeping chocolate in my room, so I'm eating a lot. 200g bar in less than a week.
Before I started eating chocolate again, I was having to basically skip lunch for several days to get any weight off my tummy. I would just play video games all day until dinner. If I didn't, it was back to not being able to zip up my trousers.
I don't know how this works. Has anyone else had such an experience? A web search brings up a study showing that eating chocolate doesn't make you gain weight, but nothing about it making you lose weight, or at least lose tummy fat (my weight never evenly distributes. I have twig arms, and all the weight goes to my tummy).