When the Body Runs on Fat
The well-established shift from burning glucose to burning fat-derived ketones, the real metabolic engine of fasting.
Fasting
Trending Now
Most-discussed protocols in 2026
6 protocols. 1 rest on strong human evidence. Ordered with the best evidenced first.
6 protocols in Trending Now
Time-Restricted Eating · Leangains Protocol
The most practiced and most studied fasting protocol on earth. 16 hours fasting, 8 hours eating.
Three-Day Water Fast · Deep Autophagy Tier
At 72 hours, growth hormone surges 300%, autophagy peaks, and the immune system begins to reset.
The Cellular Recycling Process Behind the Hype
The cell's self-cleaning and recycling system, real, Nobel-winning science, and the single most overhyped word in fasting marketing.
What Fasting Does (and Doesn't) Do for the Gut
The real digestive physiology behind fasting, gut motility and microbiome shifts, separated from "gut reset detox" marketing.
One Meal A Day · 23:1 Protocol
The most extreme daily fast. 23 hours off, one meal on. Simple, effective, and easy to do badly.