How Weight Is Measured

The protocol

• One scale for the whole year: a Hume Smart Scale
• First thing in the morning, after the bathroom, before anything is drunk
• No clothes, bare feet, same spot on a hard floor
• The reading is entered on the day it is taken

Why the same conditions matter

Day-to-day weight is dominated by water and gut contents, not fat. Holding the time of day, the hydration state and the surface constant does not remove that noise, but it stops the protocol itself from adding more. This matters especially around fasting days, where a two-pound overnight swing is routine and says very little.

Body composition from the same device

The scale also reports body fat percentage, lean mass, body water, visceral fat index, skeletal muscle mass and bone mineral content. These come from bioelectrical impedance, which passes a small current through the body and infers composition from resistance. They are strongly affected by hydration, and hydration is exactly what a fasting day changes.

They are published because the trend still carries information, but where a body-composition figure matters, the DEXA scan is the reference and the scale is the ongoing signal between scans.

What this measurement cannot tell you

A single reading is close to meaningless on its own. What matters is the shape of the series across a year, read alongside the fasting schedule, sleep, training and the notes for that week. Nothing on this site is presented as evidence that fasting caused a change: this is one person, with no control condition, and many things change over a year besides the fasting days.