India, Oct. 17 -- Do you view the official guidelines for physical activity the same way you view terms-and-conditions agreements? You know they exist, you vaguely intend to follow them, but the moment you hear terms like 'moderate-intensity physical activity', your brains check out? Also read | Anita Raj at 63 proves age is just a number when it comes to fitness: Watch how veteran actor keeps her body toned

Are you supposed to be running marathons? Does walking on your terrace count? Does a 16-year-old need way more exercise than a 40-year-old? If you've ever felt guilty about not hitting 10,000 daily steps or felt confused about how much sweat is actually required to keep your body running smoothly, take a deep breath.

The World Healt...