Ok here was my reasoning behind it, just wanted to see what others had to say. I say train with NO mirror. The reason this all came about was because i've noticed alot of form checks on the board and thought, hmmmm, what would be the best way to teach someone? After my thinking i came up with the conclusion that when you are training someone, until they have the form down you should not use mirrors. You need to teach them to FEEL what is a correct deadlift, what is a correct bench, etc. Feel can't play tricks on you like your eyes can. Anyone else agree or disagree?