Do you know why you have been told that sleeping on a firm bed is good for you? Historically mattresses were made of materials that would compress. This caused mattresses to sag in the middle forcing people to sleep in a hammock position. Not surprisingly people complained about back and neck pain. As a remedy they were told to put a board under the mattress for support. Thus, the myth of the hard bed was born.
As a result, one of the major misconceptions people have when choosing a mattress today is that they confuse the word firm with supportive. We now know that a bed that is too firm creates an inflexible and unsupportive mattress, forcing your body to conform to it. A firm bed not only creates pressure points that inhibit circulation but also makes it virtually impossible to align your spine.
A mattress that is too firm does not allow your shoulders and hips to sink in. A firm mattress will work against your body, causing your shoulders and hips to buckle inward, forcing your spine into an unnatural position. The pressure from this inhibits circulation and can create intense pressure on your lower back.
A mattress that is too soft does not give you adequate support. Your body ends up in a hammock position causing your shoulders and hips to pinch in, resulting in a curved spine.As with the firm bed, this curvature puts pressure on your lower back and can cause your muscles to tighten up.