What are the benefits of spraying cold boiled water on your face?

The human head is the focus of six yang meridians: 1, hand Yangming large intestine meridian 2, hand shaoyang sanjiao meridian 3, hand taiyang small intestine meridian 4, foot Yangming stomach meridian 5, foot shaoyang gallbladder meridian 6 and foot taiyang bladder meridian 7. Among them, the Du Meridian and Ren Meridian in the Eight Veins of Strange Meridian converge at Baihui. Yang meridian belongs to six fu-organs gathering in the head, and Du meridian sprays cold boiled water on the face: it has the functions of refreshing the brain, dispelling drowsiness and enhancing memory.