Do you have any opinion on tens units? I have found them ineffective, but perhaps one can be modified? If you happen to be aware of a diy poor man's hack, mayb

Do you have any opinion on tens units? I have found them ineffective, but perhaps one can be modified? If you happen to be aware of a diy poor man's hack, maybe point me yonder. I gots lots o' problems. I'm also interested in zapping me 'ead, but that's more complicated and... seemingly expensive.