I have been using an App called Zero which (importantly for your question) has a "Learn" section which allows you to read up on fasting. (as an example they li

I have been using an App called Zero which (importantly for your question) has a "Learn" section which allows you to read up on fasting. (as an example they link to this: https://getkion.com/fasting-decoded/ https://getkion.com/fasting-decoded/ I started with the 'skip breakfast' style of fasting, which was good, but then I did my homework on the different 'types': 16:8 16 hours no food: 8 hour 'feeding window' (generally normal dinner, no breakfast, later lunch) 18:6 - this is where I believe most Intermittent fasters go. 20:4 - I've done this a bit, and it works for me, but I can't do it more than once or twice(!) a week.