A chiropractor taught you to choose a mattress. The harder the mattress, the better?

There are many reasons that affect the quality of sleep, both physically and psychologically. However, unsuitable mattresses can also cause people to "sleep without sleep". According to a "Sleep Quality Opinion Survey of Hong Kong People", 566 Hong Kong residents over the age of 18 were interviewed by random telephone last month, and it was found that 83% of the respondents had experienced different sleep problems in the past 3 months, among which the most The five most common problems are: feeling tired after waking up (58%), waking up earlier than scheduled (49%), waking up in the middle of the night (42%), difficulty falling asleep (38%), and having nightmares (25%) ).