An immortality machine has been imagined in the past, using harmonics and magnetic fields.
https://en.wikipedia.org/wiki/Integratron
According to Van Tassel, the Integratron's workings rely on the generation of strong "intermittent magnetic fields" resulting in the generation of plasma in the form of a coronal discharge and negative air ionization inside the building. The Integratron is based on the Multiple Wave Oscillator invented by Georges Lakhovsky. The Multiple Wave Oscillator is a combination of a high voltage Tesla coil and a split-ring resonator that generates ultra wideband electromagnetic frequencies. Van Tassel speculated that electromagnetism affects biological cells, and believed that every biological cell has a unique resonant electromagnetic frequency. According to van Tassel, the generation of strong ultra wideband EMF by the Integratron "resonates" with the cell's frequency and "recharges" the cellular structure as if it were an electrical battery. Van Tassel claimed that human cells "rejuvenated" while inside the structure. Van Tassel also claimed the Integratron is intentionally constructed atop a powerful geomagnetic anomaly and its construction is entirely of non-ferromagnetic materials, the equivalent to a modern radome.
https://hdclump.com/ancient-aliens-the-immortality-machine-episode-8-2020/
https://www.youtube.com/watch?v=PsaXmvHnpNY