Edit: I saw in the comments that you were looking for true fasting for minimum of two days, I have only tried for two days twice and my body went into lockdown. I couldn’t move and it felt like I was depressed. I do not think my body can handle it. And I do not want to waste two days of my life again just laying down being not able to do anything. But I will keep my comment here if ppl are interested in my other experiment with some of the same benefits when it comes to how I felt and my well-being. I did an experiment where I didn’t eat normal food for dinner I only mixed veggies, oatmeal and water and drank it and ate an apple as a side dish. My lunch and breakfast was not changed much. The only change to my lunch was that I started eating sweet potatoes instead of pasta. I have problems with low blood sugar and hunger so I wanted to test if I could lessen it with potatoes (and meat) for lunch and oatmeal and veggies for dinner, especially oatmeal, it has a lot of good health benefits like keeping the blood sugar more balanced, lessen inflammations and making you feel fuller for a longer period. The first month was great, I didn’t feel hunger in the same way anymore for the whole day, I had more energy, my blood sugar didn’t drop like a bomb around meal time and I was happy. But then I started experimenting with tastes, I used milk instead of water and then also stoped adding celery (did not go well with milk). Tried using berries and other types of veggies or even less veggies and more fruits. After maybe 2,5 months did I feel really hungry again like extremely hungry, it hurt in my stomach in a way I have never felt before and I got migraines and felt like shit. So I stoped the experiment. I think the whole experiment was around 3 months. Now do I eat like normal, the only thing I still do is eating an apple almost every day after dinner. And I crave crispbread that has an extremely healthy taste to it in the evening… It is very weird. I would like to try the experiment again to see how long it takes until I feel like shit and also write down what I mix together with notes on how I feel, to get a better understanding of what happens and when.