My skeletal system is a bit banged up. My doc does "manipulations".....when he was working on my back/neck it offered no relief at all...in regards to the headaches and back pain. Thing that has my doc concerned is my low heart rate. He said that with me having unmedicated high cholesterol for quite a while in addition to the low heart rate he is a bit concerned. When they did an EKG last year it was "normal". The one done recently it was not. Hardening of the arteries runs in my family. Every one that I know of on my Dads side has had the roto rooter done on there neck....