4. Loud snores
Some people snore at really loud levels. It is a fact that by the age of 60, 40 percent of women and 60 percent of men start snoring. The average loudness level of snoring is around 60 decibels, which is equivalent to the level of normal speech. However, some people snore at the loudness measure of 80 to 85 decibels. While 80 decibels is equivalent to a drilling machine breaking up concrete, 85 decibels is considered dangerous for the human ear.