Sounds familar...Aren't these the scenes found in BL, the man, the myth played by Bruce Li? LOL
I guess these must be true since Lee's stuntmen, Bolo and now even Jon Benn also saw Lee used these electrical devices to practise his skills, speed, reaction, iron finger etc. Man, it sounds really crazy and to think it's 45 years ago in the 70s. Lee should be the number 1 man in the world to do that back then since we've never heard others doing similar crazy stuff like him in martial arts before.