How to take your temperature without a thermometer

Under normal circumstances, body temperature can be checked without a thermometer by touching the forehead and cheeks, observing breath warmth, assessing physical condition, comparing body temperature sensations with others, or using smart devices as an aid. If abnormal body temperature is detected, it is recommended to seek timely medical diagnosis and treatment. Detailed explanations are as follows:

1. Touching the forehead and cheeks: When the body experiences a fever, blood circulation accelerates, raising the skin temperature, especially in areas such as the forehead and cheeks. Using the back of the hand to touch one's own or another person's forehead and cheeks can help gauge the temperature.

2. Observing breath warmth: When body temperature rises, internal heat is dissipated through respiration, increasing the temperature of exhaled air. Place your hand in front of your mouth and nose to feel the warmth of the exhaled breath.

3. Observing physical condition: Pay attention to symptoms such as chills, flushed skin, or sweating. When the body's temperature regulation center is stimulated by pathogens or other factors, the set point of body temperature increases. The body then generates heat through mechanisms such as shivering to reach this new set point.

4. Comparing body temperature sensations with others: Normally, the difference in surface body temperature between individuals is not significant. By touching the hands or bodies of others nearby and comparing temperatures, you can assess your own. If your hand feels significantly warmer than the other person's, it may indicate an elevated body temperature.

5. Using smart devices: Some smartwatches or smartphones have temperature detection functions. These devices may estimate body temperature by measuring skin temperature via sensors or combining other physiological data.

If abnormal body temperature is detected, it is recommended to avoid strenuous exercise, which could increase body heat production, further elevate body temperature, and place additional strain on the body.