I was not sure, but the "Science behind the BioCharger" is really convincing:
With important details on "The energies"The Science Behind The BioCharger NG
The BioCharger NG is a hybrid subtle energy revitalization platform. The transmitted energy stimulates and invigorates the entire body to optimize and improve potential health, wellness, and athletic performance. The BioCharger NG is completely non-invasive, and has proven to restore strength, stamina, coordination and mental clarity.
The BioCharger NG utilizes four different energy types – Light, Voltage, Frequencies & Harmonics, and Pulsed Electro-Magnetic Fields (PEMFs). As individual energies, each has its fair share of supported research, however the BioCharger NG is the first energy platform of its kind to incorporate all four of these beneficial energies into one platform.
LIGHT: Not the light of a lightbulb or the Sun – but naturally occurring element gases vibrating at the speed of light including Argon, Xenon, Krypton, Neon, Helium and Mercury – produce the Light component of the BioCharger. These charged gas particles are most frequently recognized in nature as the Auroras.
FREQUENCIES & HARMONICS: Harmonics & Frequencies found in nature are produced by the 100-lightning-strikes-per-second occurring within our atmosphere. The energy of these millions of discharges per day are brought indoors using the BioCharger’s Tesla Coil.
VOLTAGE: The BioCharger NG emits voltage, similar to the naturally occuring voltage emitted during a lightning storm.
PEMFs: For the same reason individuals practice “Earthing” or “Grounding” – which suggests that when the body is grounded, its electrical potential becomes equalized with the Earth’s electrical potential through a transfer of electrons from the Earth to the body – the PEMF component of the BioCharger delivers this same electrical potential without the need to venture outside.