I have been very very good about not eating at fast food places for a very long time. Yesterday, I had been away from home all day, hadn't eaten and it was already 5pm (poor planning on my part!) so I decided to get some KFC. It was within my calorie allowance for the day since I hadn't eaten a thing, so - why not treat myself?
It tasted good, I didn't feel crappy afterwards, so I went on my way.
When I got on the scale today - my weight is up 4lbs! Now, I know I didn't gain 4lbs. In fact, my calorie balance was still negative for yesterday, and I went to the gym after my KFC. I know that weight will drop back down in the next few days, but WOW! Thats some serious overnight water retention!!