Let's get the disclaimer out of the way first: I'm not a doctor. Nothing I'm going to tell you is backed by any medical training. You should definitely see your doctor before making any decisions, ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Before Apple stole all the ...

Both the Apple Watch Series 6 and Fitbit Sense have new blood-oxygen apps, but The Washington Post's Geoffrey Fowler says they’re mostly useless. (Video: Jonathan Baran/The Washington Post) Sometimes ...