It's very hot. What if I want to sleep in class?

Of course not. It's not good to take too much medicine. There are several good methods, which I used in school before.

1: Keep a diary, write a diary with a blank sheet of paper, or write down the interesting and happy things you have experienced recently, because once you think with your head, you don't want to sleep.

2. Bring a pack of delicious things, such as dried fragrant petals or something sour, and smell it when you are sleepy. Mint-flavored food is very refreshing, so you can try it.

3. Massage the temples with cool oil to relieve fatigue.

4. Watching fluorescent lamps will stimulate your eyesight and keep you awake.