1, summer solstice, the climate is hot, so stay up late and get up early to adapt to the seasonal changes in nature, arrange lunch breaks reasonably, avoid hot weather and recover your strength.

2. In summer, sweat pores sweat for a long time, which is easy to be attacked by cold air, so you can't use an electric fan to continuously supply air during sleep.

When the air-conditioned room is open, the temperature difference between indoor and outdoor should not be too big, and at the same time, make sure not to catch cold.