What Really Happens When You Don't Eat for 72 Hours with Dr. Mindy Pelz
The Resetter Podcast with Dr. Mindy
Dr. Mindy Pelz
4.7 • 1.4K Ratings
🗓️ 29 December 2025
⏱️ 20 minutes
🧾️ Download transcript
Summary
What actually happens inside your body when you don't eat for 72 hours?
Fasting for three days has become one of the most talked-about healing tools — but it's also one of the most misunderstood. Some people believe it's dangerous. Others think it's a quick fix. The truth lives somewhere in between.
In this solo episode, I walk you step-by-step through what happens in the body during a 72-hour fast, from blood sugar shifts and ketone production to autophagy, inflammation reduction, immune system renewal, and brain healing.
This episode is designed to educate, not pressure. We'll talk about who should and should not attempt a longer fast, why preparation matters, how women should approach fasting differently than men, and how to use fasting as a powerful reset.
This episode also serves as a foundational resource for our upcoming FREE 3-Day Water Fast with Hay House, starting January 5, 2026. Save your spot here: https://bit.ly/waterfast2026
To view full show notes, resources mentioned, discount codes, transcripts, and more, visit https://drmindypelz.com/ep320/
Check out our community membership at https://resetacademy.drmindypelz.com
Please note our medical disclaimer.
Transcript
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| 0:00.0 | What happens if you don't eat for 72 hours? |
| 0:09.0 | Now, if you are new to my channel or my podcast, that probably wouldn't shock you, but I can tell you, |
| 0:17.0 | I've had enough conversations with people to think that they would literally die if they |
| 0:23.7 | didn't eat for 72 hours. And so I'm going to share with you all the science behind why you |
| 0:29.4 | actually won't die. You'll actually move your body into a reparative state, one in which you |
| 0:37.0 | thrive. And I can promise you, as somebody |
| 0:40.7 | who's done many 72-hour fast, it is really an incredible experience. But let's dive into the |
| 0:46.9 | research so you can understand exactly if it feels right for you. Welcome to the Resetter podcast. |
| 0:53.5 | This podcast is all about empowering you to believe in yourself |
| 1:00.1 | again. If you have a passion for learning, if you're looking to be in control of your health |
| 1:05.8 | and take your power back, this is the podcast for you. |
| 1:21.6 | So there, when you think about fasting, I always say this, I'm going to continue to say this, |
| 1:31.6 | that we have two metabolisms, one we activate when we eat, and one we activate when we fast. So you've got to go about 12 hours for your body to switch from the eating metabolism to the fasting metabolism. |
| 1:39.8 | And the eating metabolism, I call a sugar burner system. And the fasting metabolism, I call the fat burner |
| 1:48.2 | system. So when we switch over into the fasting fat burner system, what ends up happening is you |
| 1:58.7 | turn on switches like healing switches in your body. |
| 2:03.9 | So think of it like it's a good stress. |
| 2:08.2 | It's a small little, what we call for medic stressor that activates all these cellular |
| 2:15.0 | processes in your body that you can't activate with food. You can't even |
| 2:19.0 | activate with medication. You can't activate with a supplement. You can only activate it by going |
| 2:26.2 | without food. And these switches are miraculous. I'm going to go through them here in a moment. |
| 2:32.8 | Now, if you are new to fasting, I just want to point out that we have a beginner's guide. |
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