What five aspects does this article mainly introduce?

1, body thermometer: the temperature of navel can reflect the overall health of the body. For example, the navel temperature is too high, which is a sign of inflammation or infection inside the body.

2, the body's pressure sensor: nerve endings around the navel can sense the pressure and tension inside the body.

3. The energy center of the body: In many cultures and traditions, the navel is considered as an energy center, which has a special connection with other parts of the body.

4, the body's emotional display: navel can show a person's inner emotional state. When a person feels nervous or uneasy, his navel will contract.

5, the body's disease indicators: such as gastrointestinal problems or endocrine disorders, will be manifested in the navel.