I used to drink a ton of fizzy drinks - all diet, but I noticed a significant correlation between insomnia and pop. Drank nothing but water (literally) for 6 months and suddenly could fall asleep before midnight...

I kind of have trouble with my sleep. I sleep wonderfully (8-17 hours; yes, 17, not very often though, on average 11), but I think (or thought?) I have mild free-running sleep disorder, where I go to bed later and later each day (if I didn't manually control it, I'd have a full 24 hour cycle over the course of a few weeks). But I've never thought about pop being the cause. I'll try and ditch it, see if it makes a difference!

But yes I used to be pretty overweight, but I've lost a hell of a lot in the last year. That's one of the reasons I started drinking so much water, it helps tremendously!