Because people are prone to yawn and feel sleepy when they are very tired and lack of oxygen in their brains, even enlightenment is inevitable. Being sleepy is a sign of physical fatigue and an instinct.

Enlightenment, enlightenment, enlightenment. It means to understand something, a certain direction, the reason and reason of something you have done. This is called enlightenment.

Meditation is a way to keep healthy. Sit cross-legged with your eyes closed, adjust your breathing, put your hands in a certain position and think nothing. Meditation is also called "sitting on a plate" and "meditation". In Buddhism, it is called "meditation" or "meditation", which is a compulsory course of Zen.