Nope never did them, HOWEVER HAS ANYONE EVER TRied shrugging your own body weight from a dip machine with your arms locked out? Due to my neck and back issues I decdided to try something i havent done in a long while, you get on a dip bar and lock your arms/elbows out, so your just hanging there with your feet dangling and you simply shrug your own body weight up and down, works great!!!! and their is absolutly zero pressure on your spine as theirs no weight to bear.Sorry didnt mean to hijack this thread but i just did these tonight and got a killer pump & thought i would share for those who have back neck issues