You know something that hasn't been touched on much here is hearing protection.
I became deaf as a post pretty young in life over too many hours of running high pitched saws, equiptment, and routers. At age 40 there were some women's voices i could not hear at all... Nothing... Of course the woman i married i can hear her at 30 yards without hearing aids...but.... It's terrible to loose your hearing. I would highly encourage the use of ear plugs or better yet ear muff head sets while running any high pitched power saws, routers, & planers. I got to the point i could not use a phone at all that didnt have a head set of some kind. And the worst part was i couldn't hear those far off elk bugles any more....
About 5-6 years ago i bought some really high tech hearing aids that are computer balanced to my particular hearing loss tones. These were life changing items for me. They come in real handy when hunting too. I have blue tooth connections for my phone, or TV, or anything with bluetooth capability to have the sound come right into my ears through my hearing aids. These same hearing aids can be muted to work as ear protection too. instant ear plugs at the push of a button. I can hear the phone ring even using noisy shop tools. At dinner time Kat just calls me..... Kirk