Huang Yuan always yawns and opens his mouth to breathe.

Does the subject want to ask, "Why does Huang Yuan always yawn and breathe with his mouth open?" Huang Yuan always yawns, breathes with his mouth open, and regulates his body temperature and breathing.

1, yawning: Huang Yuan yawns, usually because they feel tired or sleepy and need a rest. In addition, yawning can also help Huang Yuan adjust his body temperature, because yawning can make them inhale more oxygen and accelerate their metabolism, thus generating heat and helping them keep warm.

2. Breathe with your mouth open: When it is hot or exercising in Huangyuan, you usually breathe with your mouth open. This is because Mr. Huang's thermoregulation ability is poor, and he needs to dissipate heat through his mouth and respiratory system. Breathing with your mouth open can help Mr. Huang inhale air more quickly, and dissipate the heat in his body through the respiratory system, thus helping his body to cool down.