i see how it could help a new trainee feel more comfortable... but its probably better for them to get the feel of the lift, because with the big 3, the mirror does not help at all...
bench... not a factor
squats... depth perception is skewed and you should be looking up or forward... not down...
deads... same thing you should DEFINATELY be looking up on these, espicialy the heavier you get... i find myself looking forwards sometimes on big lifts and they definately are either harder or i miss a max attempt because of this... the body follows the head imo
however... i am guilty of lifting in front of a mirror... i like to stare myself down though... get all psyched up when doing ME and get all wide eyed and flared nostrils and slap myself arround... thats what i think they are good for...
bench... not a factor
squats... depth perception is skewed and you should be looking up or forward... not down...
deads... same thing you should DEFINATELY be looking up on these, espicialy the heavier you get... i find myself looking forwards sometimes on big lifts and they definately are either harder or i miss a max attempt because of this... the body follows the head imo
however... i am guilty of lifting in front of a mirror... i like to stare myself down though... get all psyched up when doing ME and get all wide eyed and flared nostrils and slap myself arround... thats what i think they are good for...