A new study shows a strong “link” — one of those notorious correlations — between physical inactivity and pain severity in older adults. This post isn’t so much about the results of the study as the fishy leap to the conclusion that inactivity is the problem and fitness is the solution. Because the result does not necessarily mean that sedentariness caused the pain (or that moving around more can prevent it). What it could mean is … wait for it… Many people move less because the...