There is more than one type of fasting (more than one protocol - thowing this here: IF with 16:8/18:6/omad, ADF, 5/2, Extended) and there is some science backing this up. some of the benefits of fasting are mind blowing but it’s hard to “swim upstream” when some of our beliefs are so entrenched (examples: not eating is going to slow your metabolism down, not eating is going to make you lose muscle mass, it’s a sing of mental health issues, it’s a eating disorder, breakfast is the most important meal of the day, you need to eat X time per day to keep your metabolism working)
go to reddit and read the side bar for r/fasting and r/intermittentfasting and do a little bit of research/keep an open mind.