Do you struggle to climb the stairs or walk up a hill? Now there’s a website that will show if you really are old beyond your years – by calculating your true fitness age. By putting in simple ...

Norwegian scientists have designed a simple calculator that tells you the age equivalent of your fitness level. Experts say those who have a 'fitness age' that is at least a decade younger than their ...

Forbes contributors publish independent expert analyses and insights. Alice G. Walton, PhD is a writer who covers health and mental health. Most heart risk calculations only take our short term, or 10 ...