Wearables are great at tracking what you do—steps, standing time, heart rate, sleep—but many people also want them to explain why their legs feel the way they do: heaviness at the end of the day, ankle swelling, itching, or visible spider veins. While a smartwatch can’t diagnose a vein condition, your activity data can still be useful. It can help you spot patterns that worsen symptoms, build habits that support circulation, and know when it’s...










