I have a question for everyone regarding form on the bench press. You hear so many different opinions on range of motion. Some people advocate coming down all the way to touch the bar to your chest, some people say to stop right before it touches your chest, and others say to only come down till your upper arms are parallel to the floor. What really is the best range of motion to insure you are using pec muscles during the lift. Also, what is the best hand spacing and is it best to use a thumbless grip or wrap your thumbs around the bar??? I want to start incorporating the barbell press in my workout to switch up with dumbells but each time all i feel are working is my front delts. Any advise on how to isolate the pecs would be much appreciates !!