If you’ve seen the animated film Inside Out 2, you’ve probably noticed the main character’s mental and physical problems.

But there are many other situations where our negative emotions are more pronounced, which, as many people say, “go wrong.”

Who hasn’t been rude about something trivial, perhaps because they didn’t have time to eat after lunch due to a long meeting?

Let’s find out why the body plays with us like this.

When we’re hungry, emotions like fatigue, confusion, or anger become active.

And the culprit behind all this is sugar—specifically glucose—which circulates in our blood.

When its levels drop, our bodies react in a series of ways to restore it.

But what exactly does glucose do? Why is it so important?

This type of sugar is the main source of energy for the cells that make up our organs.

For example, the brain relies almost exclusively on it. Without it, the 100 billion nerve cells that make up the brain would not be able to function properly.

Feeling weak and irritable, dizziness, and difficulty concentrating are signs that the brain is not getting enough glucose.

And if this level gets too high, meaning that the sugar supply is lacking for too long, a person can even go into a coma.