# Day-on, day-off intermittent fasting

**URL:** <https://boards.straightdope.com/t/day-on-day-off-intermittent-fasting/937462>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [March 8, 2021, 3:56pm UTC](https://boards.straightdope.com/t/day-on-day-off-intermittent-fasting/937462 "2021-03-08T15:56:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Velocity](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/velocity/32/18006_2.png) [@Velocity](https://boards.straightdope.com/u/Velocity)\
**Post date:** [March 8, 2021, 3:56pm UTC](https://boards.straightdope.com/t/day-on-day-off-intermittent-fasting/937462/1 "2021-03-08T15:56:43Z")

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I’ve been considering doing intermittent day-on, day-off fasting (one day of normal food, one day of no food, etc.) AIUI, if someone only goes for 30-40 hours in a row with no food, it doesn’t require the delicate, careful fast-breaking procedures that one would need if one had been fasting nonstop for an entire week…is that right? (your digestive system doesn’t ‘go to sleep’ until the third day)

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**Author:** ![Mollie\_Magill](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mollie_magill/32/20882_2.png) [@Mollie\_Magill](https://boards.straightdope.com/u/Mollie_Magill)\
**Post date:** [March 8, 2021, 4:42pm UTC](https://boards.straightdope.com/t/day-on-day-off-intermittent-fasting/937462/2 "2021-03-08T16:42:52Z")

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I have a couple of friends who had done the day-on/day-off version. On the non-fast days, they ate their regular meals _as normal_. They both slimmed down quite a bit.

I have a different regimen. Three days a week, I stop eating a 6PM, and do not eat until 1 PM the following day. Again, keeping with my regular meals. I think that’s the key. Do not allow yourself to think, “I fasted yesterday, so I can afford that massive triple burger today.”