andyMunich,

NO. It is not even close to a sub-concussive impact. They require 20 Gs or more.

You need help with your anxiety. Your jaw action can be caused by anxiety, stress, medications, or a movement disorder.

L-Theanine can help you relax better. 5-HTP is also helpful.

Amazon has a 5-HTP supplement with L-Theanine, GABA, and L-Tryptophan by Amazon.com