Whether your loved ones are taking their very first HIIT class or training for marathons, we have holiday picks they'll love.
The Healthy @Reader's Digest on MSN
I'm a heart doctor—here are the 5 health metrics I'd never trust to my smart watch
Sure, they're fun to check—but a cardiologist who owns every major fitness watch explains which numbers are more distracting ...
When the new Siri arrives, it may bring with it a new validation system that checks the integrity of a device, perhaps to ...
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