Try not to stress. This has happened to us all at some time. The weight is most likely water weight and will drop off in a couple of days, probably just after your first fast day. I had a couple of drinks and a high carb meal last night with friends and the scale shows a 3lb gain overnight, this has happened before and I know obviously I didn’t have 10,500 calories and the weight will drop off in the next 2-3 days. A lady in one of the forums I’m in recently went on a fabulous biking trip but came back 4 lbs heavier. She was really stressed over it but the weight dropped off within a few days back at home and doing 1 fast day.

Stick with it and happy fasting!

If you “busted” by 800 cal then the 2 kg weight gain has to be water retention and to put it as nicely as I can faeces that has yet to work its way out of the system. Fat contains 9.3 cal per gram. So if you went over by 800 cal then that’s 800/9.3 = 86 grams of real fat weight that you put on, not 2 kg. Hope that makes you feel better?