From a physiological perspective, heartbeats and breathing do not operate independently in the human body. Cardiac rhythm ...

My Oura Ring warned me something was wrong - I didn't listen (and quickly regretted it) ...

After testing countless devices for accuracy, comfort, and general value, these are the best fitness trackers I'd recommend.

Tommy Liu builds a vehicle-mounted particulate matter monitoring system powered from harvested wind energy and an integrated ...

There was a time when wise older people warned you to check your tire pressure regularly. We never did, and would eventually ...

The Oura Ring 4 will cost $349 for Silver or Black, $399 for Brushed Silver or Stealth, or $499 for Gold or Rose Gold. In ...