As the "quantified self" craze continues, fitness trackers have us obsessing over not only how active we are but also how soundly we're sleeping. How do the devices stack up against clinical sleep studies though? CNET's Sumi Das visits the Stanford Sleep Center for an expert's opinion.
A waterproof design, one-year of battery life, and an affordable price. Is this the activity tracker to beat?
From sweating through P90X in the morning to snoozing through a full night of sleep, we put the Microsoft Band through its paces for a full month to see how it held up.
By measuring your sleep quality, this $150 gadget helps you understand what your body is up to while you're unconscious.
Several fitness trackers, as well as the Samsung Galaxy S5, now boast the ability to measure your heart rate. How do their readings stack up to an EKG? CNET's Sharon Profis, with help from Kaiser Permanente cardiologist Dr. Jon Zaroff, puts the Garmin VivoFit, Withings Pulse O2, Basis Carbon Steel, Samsung Gear Fit, and Samsung Galaxy S5 to the test.
An accessory for iPhones, the Breathometer is very portable and can be fun to pass around at parties, but its results should not be taken as permission to drive.
An experimental clock has set the records for both accuracy and stability, being able to keep time for longer than the Earth has been in existence.
Not long ago, the Internet was speculating that Comet 67P was on the reddish side, but a new image from the European Space Agency shows the comet goes for gray.
Google's annual Flu Trends metric was wildly off last year. But scientists were able to leverage the company's data to design a far more successful system.
A perfect, small-room, absolutely audiophile speaker.