eli5 why do we tear up when we feel sad?
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Tearing up when feeling sad is a normal physiological response that occurs in many people. When we feel emotional, our body produces hormones, such as adrenaline and cortisol, which can cause physical changes, such as increased heart rate, sweating, and increased tear production. Tears are produced by the lacrimal glands in the eyes, and they serve a number of important functions, including lubricating the eyes and removing debris. When we are feeling emotional, such as when we are sad, our lacrimal glands may produce more tears than usual, leading to the sensation of tearing up. This response is thought to be an evolutionary adaptation that helps to protect the eyes and keep them healthy.
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