Ignoring a check engine light might feel harmless if the car still runs smoothly, but the warning signals more than a mi ...

With this multipurpose health testing device, you can measure your body temperature and blood oxygen saturation, take an ECG, and listen to your heart and lungs with a pair of headphones.

So you just got your VO2 max number by charting it on your watch, estimating your number at home, or even heading to a lab ...

You feel that sinking pause when a warning light appears, and you might be tempted […] ...