The normal body temperature is 36-37 degrees.Constant body temperature allows us to survive at different temperatures.But the body temperature varies slightly among different people. About the temperature of different people, do you know this?

For old people

The body temperature of the older people is relatively low.

As the age increases, the body's normal will be a slight decrease. Some elderly people is even less than 36℃. It is important to know this, because some elderly people's temperature seems to be normal, but in fact, they may have fever and other symptoms.

For children 

Children have more heat dissipation through the head.

Although the factor of heat dissipation from the head depends on hair density and other factors, because children's head surface area accounts for a large proportion of the total body area, children often lose more heat through the head than adults, so when parents touch their children's forehead, it may not necessarily be a fever.

For Female

The hands and feet of female will be more colder than normal.

when people are exposed to a cold environment, in order to better protect the heart, brain and other important organs, blood will flow to these parts, so cold hands and feet will occur. This body temperature change is more obvious in women, so women sometimes feel cold, it may be caused by the cold temperature of ambient invironment.

Every person has different physiological characteristics such as fat and weight,thus the body temperature will be different. It will change according to outside temperature and ambient environment. 

For normal mercury thermometer, it will take more than 5 minutes to take the temperature. During the process,it's easy to cause inaccuracy if moved slightly or other factor.