Forget fancy handbags and designer jewelry. Today’s hottest accessory is a sleek, slim fitness tracker that can tell you everything from how well you slept to how stressed you are. And it’s not just serious biohackers, health nuts, or celebs who wear fitness trackers. Every day, health-conscious people are embracing the trend, too. It is now estimated that a third of Americans use some form of wearable. Brands like Oura, Garmin, Apple, and Samsung dominate the market, but a growing number of emerging companies are also competing, each offering its own unique features and designs. Even politicians have jumped on the wearable trend. Robert F. Kennedy Jr. sparked debate after suggesting that every American should wear one, arguing that these devices provide the insights people need to take ch