I have been grappling for 6 years and Im starting to feel wear and tear on my neck. Ive never built up strength in my neck muscles bar a few cylces of weights training and bridges. Recently when I jerk my head to one side my neck will crack (like Mr Anderson in the Matrix!) which I was never able to do before. One of the guys I train with now is out for a while with a trapped nerve due to a worn disk in his neck. Im wondering is there anything I can do/you guys to, to protect my neck from the wear and tear of grappling?? Thanks in advance.