earplugs
Pink noise cost sleepers 19 minutes of REM in a Penn lab
A week of sleep-lab nights with 25 adults found that the steady hiss sold as a sleep aid trimmed dream sleep, and that foam…
Dance-music crowds wear earplugs more than other concertgoers do
In a USC survey of about 2,000 music fans, 70% of electronic dance music regulars used hearing protection against 59% of everyone else, and…