The book you are looking for is titled (Russian: Диета воина ) by Ori Hofmekler . The 2011 edition, often associated with the series "Health of the Nation" ( Здоровье нации ) in Russian translations, is a popular guide to a specific form of intermittent fasting based on ancient survival patterns. Core Principles of The Warrior Diet
: The primary rule is a 20-hour window of "undereating" followed by a 4-hour window of "overeating" or feasting in the evening. The book you are looking for is titled
: Focuses on fresh raw fruits and vegetables, small portions of light protein (like yogurt or hard-boiled eggs), and plenty of fluids like water, coffee, and tea. and plenty of fluids like water