Why eat a sugary meal right before going to bed?
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Food high in sugar is nutritionally good for short burst energy, and if not used up, that energy is stored as fat. Since people generally go to sleep after meals are they not wasting this potential short-release energy yield?
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Let’s consider instead that we eat dessert specifically to put on fat. Well, this may have been desirable as an outcome historically, but for a long time - maybe 200 years or so - humans have NOT wanted to build fat. Also - it doesn’t work. We burn fat during sleep, so those ‘dessert gains’ disappear.
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Now let us visit the simplest answer of “it tastes good” - well in that case, why do we eat dessert when we do? We could eat sugary snack at any point of the day - a dessert-lunch might make a lot of sense! So let me repeat myself:
Why eat a sugary meal right before going to bed?


It starts with libations and food offerings.
https://en.wikipedia.org/wiki/Dessert#History
The Romans continued the practice.
https://en.wikipedia.org/wiki/Ancient_Roman_cuisine#Desserts
back to the main dessert article:
And then there’s this guy:
https://en.wikipedia.org/wiki/Chocolate#History
Now as to “why before bed”? It’s become a practice. But here’s the thing: nobody is making you eat a sweet nor at a particular time of day.
In the 80s it was rare to see people drinking water, except for “health food nuts”. It was far more common to see soft drinks/sodas. Over the years, society has become more accepting of drinking water. You didn’t have “hydrohomies” in the 80s. Be the change you want to see in the world.