Yes, all humans emit radiation in the form of infrared radiation, also known as heat radiation. This is because all objects with a temperature above absolute zero (-273.15 degrees Celsius or -459.67 degrees Fahrenheit) emit radiation. The human body constantly generates heat through metabolic processes, and this heat is radiated away from the body in the form of infrared radiation.
The amount of radiation emitted by a human is relatively low and falls within the category of non-ionizing radiation. It is different from the harmful ionizing radiation associated with radioactive substances or high-energy sources such as X-rays or gamma rays. The radiation emitted by humans is a natural consequence of their body temperature and is generally not considered to pose a health risk.