Too many words can easily lead to qi deficiency, so you can eat some food and drinks that benefit qi according to your constitution. The throat is prone to chronic pharyngitis. Drinking chrysanthemum, medlar and Ophiopogon japonicus in water can not only protect the throat, but also protect the liver and improve eyesight.
Standing for a long time can easily lead to varicose veins, which is an occupational disease of many teachers. Usually be careful not to stand in the same place for a long time. You need to walk back and forth to help blood flow back to your lower limbs. Do more exercise after class, such as walking, jogging, swimming and cycling. Take off your shoes and lift your feet at rest. Your feet should be more than 30 centimeters higher than your heart. When you come home from work, you should also lift your feet 15 minutes to relieve the blood pressure of lower limbs.
I hope it works for you.