I find this mortifying to admit, but I have one of those balls that helps my posture. They're hard to sit on, so it stops me from sitting too long... I also wear a pair of 3M(TM) PELTOR(TM) Optime(TM) II Ear Muffs. They're the same ones that people wear on the tarmac among the planes - noise blockers.
I was hiking a five-day loop - alone - in the Rocky Mountains when I rounded the switchback and saw a large body on the trail ahead. It had brown fur with a cinnamon tinge that was draped across dense, humped back muscle. A broad head lifted and I could see the dish-shaped muzzle was catching my scent. I knew bears. This was a grizzly.