All objects with a temperature above absolute zero emit electromagnetic radiation. The human body is no exception. The radiation emitted by the human body is in the infrared spectrum, which is just below the visible light spectrum. However, the human body also emits a small amount of radiation in the radio wave spectrum.
The radio waves emitted by the human body are very weak and they do not travel very far. However, they can be detected with a sensitive radio receiver. In fact, there are devices that have been developed to detect the radio waves emitted by the human body. These devices are used for a variety of purposes, including security and medical imaging.