My brother explained to me that tears are chemically like stress and when you cry you are actually releasing stress from your body. I don’t know if any of that’s true or if my brother was just trying to make me feel better about crying. But it stuck with me and every time I cried instead of feeling like I had given up and was a failure I felt that I was doing something productive.
Tears act as a safety valve by releasing excess stress hormones such as cortisol. If left unchecked, chronic elevated levels of these hormones can cause physical ailments and play havoc with mood. As stress often precedes a good cry, the sense of calm often felt afterward is at least in part due to hormonal release.