The Best Slim Fitness Trackers for Women, According to Fitness Editors

If most fitness trackers are asking how hard did you work out, the Hume Band is digging deeper and asking: how well are you aging? Hume is in a slightly different category of fitness trackers, which have mainly been dominated by step counts and calorie burn since their origin. But if you’re intrigued by longevity and metabolic health, this band may be right up your alley.

Hume differentiates itself by focusing on metabolic capacity and momentum. Instead of telling you how many calories you burned, Hume tracks how efficient your body is at producing, storing, and using energy, which produces a Metabolic Momentum Score. This shows whether your daily habits are helping or hurting your health reserves. It also updates your Biological Age based on sleep, recovery, and stress data, so you should see your “age” drop as you improve your habits. The only brand that comes close to this is Oura, which does tell you how many years behind or ahead of your biological age you are based on your data trends.

Its fitness and health metrics are solid though, offering passive workout tracking (you don’t need to hit record, it will track your workouts automatically), heart rate monitoring, HRV, SpO2, skin temperature, respiratory rate, and sleep tracking. These metrics all feed into the AI, which then provides personalized coaching nudges based on your trends and how you might improve longevity over time. Design-wise, the band is comfortable, slim, and screenless, which matters when you want to inconspicuously collect meaningful data around the clock.

As a newer player on the wearables market, Hume doesn’t have the years of research backing, like Garmin or Oura, and that’s definitely worth noting. And it’s also worth noting that as far as fitness tracking goes, this is not the #1 option—the focus here is on longevity, so detailed workout data is not available. If you see your fitness as a long game toward aging well, the Hume band is going to serve you much better than a performance-based tracker though.