Many phones can track steps and distance, smart rings report on your sleep, and some ear buds even offer heart rate monitoring. But for accurate-as-possible always-on activity monitoring, you’ll want a wearable on your arm or wrist.Fitness trackers, once seen as cutting-edge devices, now pack in more and more tech with each release. The devices we recommend are equipped with features like automatic exercise detection, personalized workout programming, and the advertised ability to monitor stress and sleep quality.Since 2015, we’ve run, walked, swam, cycled, and slept with 52 different fitness trackers day and night, assessing their accuracy, ease of use, and overall comfort.Although no tracker perfectly recorded every metric we tested, we found that the simply designed yet feature-packed Fitbit Inspire 3 is the best option for most people who want to monitor their everyday activities, with metrics like distance traveled, step count, heart rate, and estimated calories burned.