What happens when crying ?

our tears get waste when we cry and someone prefer for chocolate if we cried

See below:

Explanation:

When you cry, usually of an overflood of emotion, good or bad, tears fall from the tear ducts in your eyes. These tears also stimulate chemicals that cause headaches after crying(because of the stress hormone), tiredness, and overall exhaustion. Your tears are a mixture of water, salt, acids, and other body oils and fats.

Hope this could help!