How Fasting Days Are Selected

Chosen weekly, not fixed

The three fasting days are not fixed to particular weekdays. They are chosen at the start of each week, or occasionally the evening before, and then logged.

What the choice is based on

• Work and travel commitments that make a fasting day impractical
• Family meals and social events
• Training load — a heavy session usually sits on an eating day
• How the previous week's fasting days went, particularly sleep and recovery readings

Why not fix the days

Fixing the days would make the schedule cleaner to describe and easier to compare week to week. It would also make the year far more likely to collapse. Choosing weekly is the compromise that keeps 52 weeks realistic, and the cost is that the day-of-week pattern is not consistent across the year.

How the choice is recorded

Every fasting day appears on the calendar and in the Chronicles for that week, with the date and the readings taken. Days chosen and then abandoned are recorded as abandoned.

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.