How far do you go down when you do dips? I usually go down to 90 degrees with my arms really close to my body (I use chairs at home) rather then the wide bars that are typically found in dip stations. I also try to keep my upper body as parallel as possible to my upper arm to prevent an excessive backard position of my shoulder. What do you guys thing is an acceptable range to go down without exposing your shoulders to undue stress? How do you typically due dips?