4 Smart Rings to Help Reach Your New Year’s Resolutions

Who knew that such critical, health-determining data could be gleaned from a single finger? Apparently, it all comes down to our digits’ elevated blood flow and arteriole density, with fingers giving us much more accurate readings than wrists. Apple is allegedly developing a smart ring, but there are plenty of players already in the game, with startups and established tech brands alike offering models with more features, better batteries, and high-quality materials, from simple ceramic to 18K gold.