Cult of Mac Magazine: Hidden Apple Watch metric tells if you should exercise, and more!

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Heart rate variability is a new metric that reveals your stress level and whether you have recovered from your last workout. We show how you can use it to optimize your training and more!
Photo: Ste Smith/Cult of Mac

In this week’s Cult of Mac Magazine: Imagine if your Apple Watch could tell you which days were best for you to do a workout, and what kind of workout you should do. Well it can, sort of, thanks to a hidden feature that few people have yet discovered or know how to use.

You’ll find that story and more in this issue. Get your free subscription to Cult of Mac Magazine from iTunes. Or read on for this week’s top stories.