The human body is a marvel of engineering. Its dexterity, strength, and stamina allow amazing feats of athleticism and, yes, survival in the worst adversity; but wear and tear takes its toll over time on just about everything with moving parts (even you). The resulting loss of work efficiency and mobility, bad enough in normal times, can decrease your chances to succeed after a major disaster.
The moving parts in our skeletal frame are known as joints. Each one has varying amounts of range of motion and strength. They are remarkably durable, but break down with time and strain. The longer lives of modern humans has, thus, caused a high prevalence of joint disease called “arthritis”.
It’s thought that 54 million Americans today suffer from some form of arthritis, and that the number will rise to 78 million by the year 2040. Although you