If humans can go weeks without eating, why do we eat 3 times a day?
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In your brain there’s a thingy called the hypothalamus the does a lot of neat things. In the hypothalamus there’s a part called the ventromedial nucleus that makes you feel full when you’ve had enough to eat. Another part, the lateral hypothalamus, makes you feel hungry.
If your body gets too much food, not enough food, or the wrong food, bad things can happen. It’s a big strain on the body to go for too long without eating, and it’s not healthy to eat too much too often.
Three times a day is just a convenient way to break up the day for eating, but it’s more of a cultural thing than anything else. You could hook yourself up to an intravenous nutrient drip and get a constant stream of food throughout your day, or you could get all your caloric needs met with one big meal. Or you could fast intermittently. There’s some debate over how often it’s best to eat and how long it’s best to take a break from eating, but for the most part, most people’s bodies do a pretty good job of letting them know when they need food. And if yours doesn’t, there’s apps that help you with the math
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