How do you do intermittent fasting? The majority of IF'ers consume for 8 hrs a day, not eating the other 16 hrs. How long do you need to quick for intermittent fasting? You could begin with a 12-hour quick as well as function your method to 16 hours. Most IFer's consume from 10-6, 11-7, or 12-8. It does not matter exactly what consuming home window