I got through a 40 hour dry fast last week. It is pretty easy if you've already trained your thirst through ODAD. Just like coming off a long extended fast, you don't want to go too big drinking or eating when you come off a dry fast. Start with one cup of liquid then wait at least 30 minutes before the next one. You can swell up pretty fast and also be stuck with a full stomach if you don't take it easy.