Is Fasting for a Whole Week Good For You?

July 31, 2020

Photo by Matteo Di Iorio on Unsplash

After learning that you can fast for a whole day and be fine, some people might ask -- well, can you fast for a whole week? The answer here is a little bit more complicated.


Well, you can fast for a whole week, physically. However, at that point research on the topic begins to dwindle, and so we aren’t super sure whether fasting for a whole week is even worth it. One of the main reasons research dwindles is also one of the main reasons you’d probably want to stay away from fasting for a whole week -- it has a massive drain on your energy! If you want to stay active in that time, you’re probably better off doing a 5/2.


As the name suggests, the 5/2 is a weekly schedule that involves eating for 5 days and fasting for two, with a day in between the fasts (aka you can fast Tuesday and Thursday, but not Tuesday and Wednesday). This tends to be the best schedule for those who are uber busy on two days in particular. For example, I found this diet really helpful when I had all my classes stacked on Tuesdays and Thursdays. If you’ve got no time to eat, then learning how to fast can save you the stomachache!


That being said, 5/2 isn’t your only choice. 16/8 is the second most popular caloric restriction option, and it also has a lot of research backing its potency. Unlike 5/2, 16/8 is a daily schedule -- fast for 16 hours, eat for 8. Of course, that means that you aren’t fasting for 24 hours. But if the idea of fasting for 24 hours throws you off, you can just do that instead.


Want to learn how to keep a fasting schedule? We have a topic for that. You can learn more about Shanah by going to our page here!


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