Research has shown that hearing loss may be irreversible, and it only takes 28 seconds of loud music to damage your hearing, so if you want to be an octogenarian metalhead, you better start wearing some plugs. We've talked about this issue before, and advocated for wearing earplugs, but we have never seen the case laid out any better than by Gear Gods editor Trey Xavier, who offers five excellent reasons why you should invest in a good pair of ear plugs.
Amazon has a pretty healthy selection of earplugs to start.