Never touch equipment to to bottom of your shoe! Most clinical instructors would fail you for improper infection control techniques - floors and shoe bottoms are filthy. You should never touch a patient’s skin with a tuning fork that has been activated by a bottom of the shoe whack.
I'm interested but is there really any truth to tuning forks❓ If it's that good why is this breakthrough not out there❓ With what certainty can you know which frequency does what exactly❓ How can you verify the tuning fork is actually set to the said frequency❓ I know some decades ago a scientist built a device using sound or frequencies to destroy cancer cells is this tuning for a result of his work❓