Is it better to stand indoors or outdoors?

According to the weather, season and physical condition, it is generally suitable indoors in winter, outdoors in summer morning, and indoors and outdoors in spring and autumn. Don't go outdoors in foggy days, evacuate in front of the station, don't stand indoors with air-conditioning electric fans on, and don't stand outdoors with strong winds. The outdoor environment should be clean, quiet, full of green, with a wide field of vision, and your physical condition can be considered by yourself.