Category: Extended fasting

Research indicates that significant health benefits from fasting may begin after the initial 72 hours, as the body shifts from glucose to fat for energy. However, this period also increases the risks, making extended fasting a practice that usually requires careful consideration and, for most, medical supervision.

In a 2024 study, researchers observed that a three-day fast triggered significant systemic changes in the body, impacting thousands of proteins. This intense metabolic shift is a core reason why many wonder, **what happens if I fast for 3 days straight**?

According to a study published in *Cell Stem Cell*, cycles of prolonged fasting in mice triggered stem cell regeneration in the immune system, a finding with major implications for human health. This guide will explain how to successfully do a 5 day fast by detailing the preparation, during-fast management, and the vital refeeding process.