It turns out being "hangry,' meaning so hungry you're angry, is a real thing.
According to a team from the University of North Carolina, an empty stomach can trigger an emotional response.
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However, it doesn't just happen because of a drop in blood sugar.
Hunger causes the body to release the stress hormones and adrenaline.
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The hungrier you are, the more hormones are released, causing stress which can lead to anger.
So maybe, keep a snack nearby.