How do you do intermittent fasting? A lot of IF'ers consume for 8 hours a day, fasting the other 16 hours. For how long do you need to quick for intermittent fasting? You could begin with a 12-hour fast and also function your way to 16 hrs. Many IFer's eat from 10-6, 11-7, or 12-8. It doesn't matter exactly what consuming window you choose, just as