Its all those BBQ cookouts while watching the ice breakup! I've had a couple fasts last 18-20 hours (16-17 normally), but I've not tried 24 yet. I'm doing this more as a lifestyle change (i.e. not eating breakfast nor snacking late). Any particular reason 24 hours helps so much more (other than skipping another meal)? My first 10 lbs or so came off slowly and surely. I'd like to lose another 10 to drop below 200, then maintain. I'm noticing now, I'm much hungrier when it comes to lunch time and a few more mood swings than before (i.e. snickers your-not-you-when-you're-hungry). I'm not sure if that is because of increased activity in the summer or just getting closer to a good "natural" weight for me. Side note: I've always been heavy for my size, but not "big". Most people are stunned to hear that I'm over 200 lbs as I generally "look" fit. So while I'm "supposed" to be 175 lbs, I don't think that is very realistic for my body type. I was 180lbs in college and a bean-pole. It just annoys me that BMI is always a simple height/weight ratio (yeah, its "easy"), but it never matched me very well, IMO. This is me as well. I've got a pretty fit lower half, so I'm sure that leads to some of the weight, but most are shocked when I tell them my weight.