The owner at my favorite fabrication shop lost an argument recently between his body and his bench grinder. The story he told me was that he leaned a bit to close and his t-shirt caught on the grind wheel and pulled him (he is not a small man if you catch my drift) into it......Left a nice little gouge in his chest that required 20+ stitches to close up...If it was not for his wife coming in to bring him dinner and yank the power cord out of the wall, it could have been a lot worse................