Well there are many different windows you can choose from. I'd recommend going to you tube and type in intermittent fasting and listen to the various types and pick one, that you think would fit for you right now. That may change as you go. Variety will allow you breathing room to be you on this.....Hope this helps
If you google "Fast 5 diet" you will find a free e-book written by Dr. Bert Herring. It explains everything for Fast 5 or 19:5 eating. I eat from 5-10 pm every day and fast the rest of the time.
I've been doing it for a week, down 2 lbs and not having a hard time at all!
There are different styles. The ones I have come across are 5:2 (eat normally 5 days per week, eat only 500-600 calories for 2 non-consecutive days per week), 16:8 (fast for 16 hours and eat for 8 every day) and alternate day fasting. I think Fast 5 is the easiest to incorporate into your social life for a 9-5 worker like me. Dinners/drinks/holiday family gatherings are no problem.
1. 40 lbs lost (251): ACHIEVED MARCH 2, 2012
2. Weigh what I did when I graduated high school
(235): ACHIEVED January 5, 2015
3. 70 lbs lost (221):
4. No Longer Obese (208):
5. Onederland (199):
6. Goal! (180):
I've lost 12 lbs. I do one day of 500 cals, the next day I est normally and that includes snacks. I am diabetic and was about to start on insulin, but now my numbers are down to where they were two years ago (and I'm eating carbs!). I know I may be a rarity but fast days are really easy for me and get easier the longer I do them.