How earphones affect your health?
Sennheiser 202's Mark II, I don't own them but they have many good reviews, I own these and they are brilliant! Sennheiser HD 555
How earphones affect your ears?
Does the health of your mouth affect your health overall?
Yes it has been Proved that it can affect your Heart if you have bad Rotten Teeth ,you can eventually end up with Heart Trouble. So at the very Least Clean your Teeth a couple of Times a Day.
Does physical health affect mental health more than mental health affect physical?
No, quite ther contrary. Although physical health does effect mental health, mental health almost completely effects physical health.
Can loud PA speakers affect your health?
It can certainly damage your hearing. You should be provided with ear plugs.