Extended fasting temporarily lowers testosterone, but research and real data show it rebounds during refeeding. Here’s how my levels changed across two multi-day water fasts and why fasting may actually support healthier long-term hormone balance.

I recently completed a 10-day water fast and documented each day - from deep sleep and muscle cramps to glucose and ketone highs, mental clarity, and a smooth refeed. In this fasting diary, I share daily notes, challenges, weight loss results, and lessons learned about electrolytes, workouts, and mindset. If you’re curious about extended fasting for health benefits beyond weight loss, here’s exactly what happened to my body and mind.

From my first 24-hour fast to a 9-day water fast — here’s how fasting reshaped my mindset, health, and confidence over 25 years.

Extended fasting is tough — but it doesn’t have to be torture. These 20 tips will make your next multi-day fast easier, safer, and more effective.

I completed a full 7-day water fast and tracked everything: weight, fat, lean mass, glucose, ketones, HRV, sleep, and refeeding. If you’ve ever wondered what real 7-day fast results look like, here’s the detailed, data-backed breakdown.