Moose,

Welcome to NeuroTalk. You don't say what you current symptoms are besides stiffness. It will help if you introduce yourself and tell us more about your symptoms. How long have you played hockey? How many previous concussions? How many 'puck to the face mask' dingers ? How old? Male? Canada or US? Do you drink? How much, how often? What kind of work do you do?

What supplements have you been taking?

Hyperbaric (HBOT) usually takes 60 to 80 treatments to see a difference, if there are any positive results.

Has your chiro told you to ice from your upper neck to your upper shoulders? He is missing it if he didn't.

I have a thread with my suggested regimen of vitamins, supplements, and other recovery protocols. Look for it titled "Vitamins."

There are lots of good people here. Feel free to unload.

My best to you.