I tried this way too. It didn't break, but I remember my eyes shooting wide open after I pass out. I was convinced my bracelot was what was choking me while I was still dangling in the air. Scary and very disorienting way to go, luckily neither of us suffered brain damage which is a real strong chance. Hollywood makes such methods like this and pills seem so peaceful, but they really aren't. My attempt with pills was anything but peaceful sleep. My body was all blue and shaking. After the rope attempt, I had to wear a scarf around my neck for a week to head the abrasion.