Metabolic HealthHere's What Happens to Your Body During a 5-Day Fast, Day by Day
This video walks through the physiological changes that occur during a five-day water fast. On day one, insulin drops sharply and water weight falls. Day two is the hardest as the body transitions to fat burning. By day three, autophagy ramps up, bringing improved mental clarity, mitochondrial repair, and stem cell activation. Days four and five continue cellular cleanup, targeting damaged cells, liver fat, and visceral fat. After five days, human growth hormone rises significantly, potentially supporting muscle preservation and healthy aging. Key practical tips include consuming sea salt daily to avoid electrolyte crashes, using MCT oil to ease the transition, and keeping mTOR low by avoiding protein and carbs. Light walking is encouraged; intense exercise is not. The video also covers refeeding strategies and lists contraindications for vulnerable populations.
