Now global warming has begun to affect humans, and rising temperatures will affect human physiology, and the chances of getting sick will increase. 

According to the Centers for Disease control and Prevention, more than 600 people die from extreme heat each year, but this may be an underestimate, because heat-related diseases, such as heat stroke and heat exhaustion, do not need report to the public health agency.The high temperature is especially dangerous for the elderly and those without medical conditions. 

Everyone knows that an important factor that can lower body temperature is sweat evaporation. An important tool that can accelerate the evaporation of sweat is the electric fan we usually use. Electric fans can accelerate the air flow and the evaporation of sweat on the surface of our skin, which can achieve the purpose of faster cooling.

Currently, the EPA recommends using ceiling and window fans in “moderately hot weather” over standing fans because they more effectively cool a room by creating a draft.