Step aerobics is a classic cardio workout. It has lasted for decades for a simple reason: it delivers results. The "step" is a 4-inch to 12-inch raised platform. You step up, around, and down from the ...

Professor Matt Kaeberlein, who studies the biological mechanisms of ageing, says that the step-up tops his list of exercises we should all be doing at least from midlife onwards. The founder and ...