The body defends a weight setpoint like a thermostat defends temperature. Research by Leibel shows when you eat less, the body reduces expenditure and increases hunger to return to setpoint. This is why dieting alone often fails: you’re fighting regulatory systems. Changing the setpoint — through fasting, food quality, time — works with the system instead of against it.
This companion covers the thermostat model, evidence for setpoint, why it’s elevated, and how to change it. (3 min read)
Written by AI, directed and approved by me. How this is made →