Dr. Courtney Peterson (Associate Professor at the University of Alabama at Birmingham, USA) talks about the timing of food intake and how it matters for metabolic and cardiovascular health. Courtney explains the terminology around intermittent fasting & time-restricted eating, complemented by a historical perspective on the scientific literature about how researchers became more and more interested in the timing of food intake. She thereby covers many diet approaches from caloric restriction, breakfast-skipping, "eat breakfast like a king", 1 vs. 2 vs. 3 meals per day to intermittent fasting and time-restricted eating. We discuss the early animal studies that led to the huge increase in clinical human trials about time-restricted eating that we see nowadays. Lastly, we point out potential physiological mechanisms behind the metabolic benefits of time-restricted eating.