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Diets that sound too good to be true are often just that. But a plan called intermittent fasting that frees its followers from calorie counting and carb cutting is quickly gaining traction in Silicon Valley. Scientific research suggests its followers are onto something big.
Popularized by Bay Area health nuts who don't mind being guinea pigs for science, intermittent fasting (or simply "IF" among fans), involves limiting the time you eat to a specific time period each day. While most of us snack somewhat regularly from the time we wake up until the time we go to sleep, intermittent fasters only "feed" within a strictly defined window, often from morning to afternoon or afternoon to evening.