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POPSJoggers outpace an early grave As they say "Use it or lose it" The study finds that regular exercise is the key. There doesn't seem to be any 'magic formula' (despite what they say on late night TV...or spam) except that the exercise be vigorous. That can be relative -walking is more vigorous than sitting down, but what can be described as vigorous escalates as fitness improves. Not just a matter of deciding to do 20 sit ups for example (it helps to start with an anchor) which can be an aim, but seem impossible. Start with what CAN be done, no matter the amount, and set targets. It also helps to monitor heart rate, as this can be a critical fitness measure. Everyone has their individual optimum heart rate, depending on fitness, age, and health.