Most hybrid smartwatches track the essentials: steps, calories, distance, and heart rate. Some even offer more advanced features like sleep tracking, menstrual cycle monitoring, and hydration ...
As we explain in our picks below, this type of heart rate monitor can respond more quickly to your heart rate’s changes than the optical sensors found in watch and fitness tracker monitors.
Although the Apple Watch now offers a deep well of fitness and activity tracking capability ... writing for publications like Health, Women's Health, Men's Journal, Runner's World, and more.