Most diets dictate what you should or shouldn’t eat. But the most popular diet of the last year is less concerned about what you eat than it is with when you eat.

Intermittent fasting involves time-restricted periods of eating and fasting, such as consolidating all your meals into one six- or eight-hour window – like noon-6 p.m. or noon-8 p.m. Many of the most popular methods involve skipping breakfast.

Mary Reck

In this photo combination, Mary Reck is seen before she started intermittent fasting and now.

Nicole Morrissey