Manmade electromagnetic radiation increases in the environment as new applications are frequently adopted. Humans serve as receiving antennas for electromagnetic waves. Thus various new responses can be expected. In addition to radio and television programs, mobile telephony, distant reading of electricity and water consumption and many other technologies load us electrically and magnetically both out-and indoors. Most exposures are active all the time, day and night, continuously or in regular pulses. Personal devices are also important sources, since they touch the skin and are held near the brain and heart. Humans are good bioindicators, as their physiological parameters, such as heart function and blood biochemistry, are frequently recorded. Data storage and analysis are getting better. Humans also report symptoms that cannot be directly measured, and carry valuable information on bioeffects. Studies from recent decades have shown that exposure to electromagnetic waves can break DNA chains, damage proteins,