People sometimes think that fasting will make them go into “starvation mode,” and that, when they eat again, their bodies will gobble up every single calorie and store it as fat.
Well, this depends on how long you fast, but it isn’t really true, and isn’t true at all when it comes to the intermittent fasting we’ve been talking about (only eating for a certain block of time each day).
A study showed that a person’s basal metabolic rate didn’t even start to decline until 60 hours of fasting, and it wasn’t by much even then. Starvation mode does exist, but it really only happens after 3 or more days of not eating.
So, unless your time block of eating is measured in days and not hours, this isn’t something to worry about.