View this interactive chart on Fortune.com Smartwatches ... or an altered exercise regimen, let your health care provider ...

Walking 10,000 steps a day is a popular health goal, but researchers have introduced a new, potentially more powerful metric: daily heart rate per step (DHRPS). In a new study published by researchers ...

Both take 10,000 steps a day, but one has an average daily resting heart rate of 80 — in the middle of the healthy range — while the other’s daily resting heart rate is 120. The first person ...