However this time rather than throwing the jabs as I was shown, I started to lean my
jaw into my shoulder as I throw the
punch so that my expanding shoulder muscle would jar/nudge my jaw and somewhat cause a vibration to my head, I did this repeatedly, I would stop for a while and then maybe a few hours later do it again, the point being to convince myself that my shoulder hitting my jaw wasn't hard enough to cause my head to shake so much that it could damage my brain.