This hidden Apple Watch feature tells you if your workouts are doing any good

It’s all very well to know how far you ran, cycled and swam. But the whole point of exercise is not just to clock the miles. It’s supposed to make you more fit. So, how do you know if all those sweaty miles are actually doing any good? One way is by measuring your heart […]

(via Cult of Mac – Tech and culture through an Apple lens)

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