Guide to intermittent fasting and ketosis, outlining what they are, how they work, and practical steps for implementation.

It details various fasting schedules, explains the physiological shift to fat-burning (ketosis), and provides food lists and meal ideas for a ketogenic diet.

The text also addresses common myths, discusses potential benefits for brain and metabolic health, and offers advice on managing challenges like "keto flu" and staying motivated, contrasting these practices with historical fad diets.