EMF stands for electromagnetic fields, which are often referred to as EMFs. EMFs are a type of radiation, that take the form of waves.
Natural EMFs
The earth produces an EMF, and so does the human body. Scientific research has demonstrated that every cell in your body may have its own EMF, helping to regulate important functions and keep you healthy.
A healthy human body resonates with the earth’s magnetic field at around 10 hertz, although individual parts of the body resonate up to 100Hz.

Natural EMFs or ELF’s (extremely low frequencies) are low in intensity.
Man made EMFs
Human technologies – WiFi, mobile phones, cordless phones, smart phones, laptops, electricity cables etc. create powerful EMFs. These EMFs have been shown to disturb the human body’s natural energetic field and effect our biology.
In this video Guy Hudson talks about EMF & Health.