Intermittent fasting (IF) is a term used to describe diets that include periods of food restriction. These "fasting" phases are strategically alternated with periods of "feasting" where people who follow the plan consume foods without limitation. Those who practice intermittent fasting restrict or completely eliminate food intake during certain times of the day, week, or month to gain health benefits, boost longevity, or lose weight. Some people also practice intermittent fasting for religious or spiritual reasons.﻿﻿