I don't recommend anything more than 3-5 days max. Without knowing what your goal is just try the 16:8 and eat a nutrient rich diet that is low energy. You sho

I don't recommend anything more than 3-5 days max. Without knowing what your goal is just try the 16:8 and eat a nutrient rich diet that is low energy. You should be able to fit 2 meals in (lunch and dinner) in a window from 12 - 8 pm. Nothing but water/coffee/tea before or after that window. If your healthy and don't suffer from any issues, move on to one meal a day. After you master that then try a 1 or 2 day fast. Look up Jason Fung on youtube. Great stuff.... https://www.youtube.com/watch?v=7nJgHBbEgsE https://www.youtube.com/watch?v=7nJgHBbEgsE Check out Dr Berg on youtube also. He does "Healthy Keto" which is a very balanced and healthy diet. https://www.youtube.com/user/drericberg123 https://www.youtube.com/user/drericberg123 Lots of great resources out there....