Brief introduction to the purpose of tears

Tears are tears. From Tang Hanyu's Nanshan Poetry.

Seeing someone crying, we occasionally ridicule: "Look, it's Jin Doudou again." This is a joke, of course, but judging from the function of tears, it is really a veritable "Jin Doudou".

Tears have two main functions: one is to protect eyes, diminish inflammation and resist bacteria; The second is to relieve mental stress. Let's talk about the functions of these three aspects in detail.

1. Protect eyes, diminish inflammation and resist bacteria.

When a foreign body enters the eye, the lacrimal gland will secrete a lot of tears, which will wash and dilute the dirty things and rush out of the eye to protect the cornea and conjunctiva from damage.

Tears can also form a thin film on the corneal surface, keeping the eyeball surface moist, reducing the friction between eyelids and eyeballs, making the corneal surface smoother and more delicate, and making the eyes look brighter.

Another important reason is that tears contain a special bactericidal substance-lysozyme, which can kill and dissolve toxic cells. In addition, protein in tears also has antibacterial and bacteriostatic effects.

It can be said that tears are the best eye drops.

2. Relieve mental stress.

Russian family psychologist nadezhda Shulman said: Tears are the most effective "prescription" to relieve mental burden. Probably because women cry much more than men, so women have fewer infarcts and strokes caused by nervous tension than men.

Because crying when you are wronged or tortured by sadness can vent your pain, which is very beneficial to improve your mood and maintain your health.

Generally speaking, tears are good for your health. No matter sad or happy, if you want to cry, you should have a good cry and vent your depression and distress.

But crying too much will damage memory and attention, and even reduce immunity, so enough is enough.

Flowers become demons and curse Bai (flowers are so cruel that everyone will cry when they die). When Meijia died in Zi Qiao's dream, it was really touching.