Not a champion, I binged after my last fast which I could just kick myself for. Gained a lot of water weight, but I’m starting another fast today; gonna try to go two weeks again.
@AuntJane A 36-hour fast is doable, but if you’re anxious about it then maybe you should start smaller, like 24 hours. Whatever you end up doing, be proud of however many hours you accomplish, don’t beat yourself up if you don’t reach x number of hours. If you read a lot of the fasting threads you’ll see many mentions of your “fasting muscle”. The more you use it, the easier it gets.
Right now I wouldn’t even put a number of hours on a fast, if I were you. Just start out fasting as long as you can and record the number. The next time you fast try to beat that number, even if it’s just by a little bit. And me personally, I find it harder to fast if I declare a certain time period of fasting. It puts pressure on me psychologically and I jinx myself. I like to start out saying “I’m gonna fast today, we’ll see what happens tomorrow”. And when I wake up the next day I’ll say “well I survived one day, let’s try to make it two days”. And so on. It takes the expectations and pressure out of it.
Last, don’t do what I did and binge afterwards. Prepare keto food ahead of time so that you’re not tempted by carby stuff. If prep cooking is going to cause you to break your fast early then stock up on keto convenience foods like olives, boiled eggs, pickles, etc. Even if you’re starving and stuff yourself with these foods after a fast, you can’t do too much damage. (I’m talking about the next day after you’ve gently broken your fast; you don’t want disaster pants!)
There are lots of people on here who have way more experience fasting than I do. I’m sure you’ll get lots of advice. The main thing is to not get stressed about it as that raises cortisol which will work against you.
Whatever you do, know that everybody here is cheering you on and will support you and answer any questions you have!