9 Great Reads From CNET This Week: Smartwatches and SpO2, Paycheck Apps, Nightmares and More What we really get out of tracking blood oxygen levels with a smartwatch, how certain apps get you paid before payday, why we have nightmares, and other good stuff.

If you have a smartwatch, chances are you use it to track some aspect of your health. During the pandemic, that may have included keeping an eye on you oxygen content in the blood. smartwatches by Apple, Samsung, Fitbit and Withings all offer this ability.

However, assessing what exactly these blood oxygen readings (aka SpO2) mean at any given point in time and over time is a complicated matter. CNET’s Lisa Eadicicco spoke to doctors and product experts about the ins and outs of this health feature, and she’s here to share her insights with you.

Her article is among the many in-depth features and thought-provoking commentary that appeared on CNET this week. So, let’s go. These are the stories you don’t want to miss.

Accessing more health data from home is helpful, but smartwatches still have limitations to overcome.

Also, wage apps don’t fix problems caused by inflation and low wages.

DNA analysis may finally have solved a mystery behind one of history’s deadliest diseases.

From waking up in a cold sweat to lingering discomfort the morning after, here’s what happens when you’re struck by a nightmare.

WWDC has come and gone, and still no Apple AR/VR glasses. But new software hints at future possibilities.

The test measures a variety of gamer skills. I wasn’t able to sniff into anything.

The strange lack of sulfur dioxide in Venusian clouds does not appear to be the work of extraterrestrials.

Commentary: Somehow, reality dating shows just keep getting crazier, and actual dating isn’t far behind.

Fear of the dark is common in children, but adults can have it too.

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