"Correct training is paramount for good clinical practice of the methodology."???
Surely you jest!
Training until the cows come home, changing electrodes, standing on your head whistling "Dixie" can NOT alter he SIMPLE FACT that the idiotic machine is NOTHING but a TENS device that can NOT overcome basic principles of human neurophysiology.
Neither it NOR that moron inventor's cirrhosis repair machine NOR his age reversal machine NOR his scar removal machine can do ANYTHING except cause some subcutaneous muscle spasms and/or pain due to heat from current flow.
If the SFB inventor had actually gone to COLLEGE instead of whatever vocational school he MAYBE graduated from, he would know all that.
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