What is Fitbit Cardio Load and Target Load? Best answer: Google describes Cardio Load as "real-time tracking of how hard your heart is working during workouts and throughout the day." The Cardio Load ...

Fitbit introduced Cardio Load and Target Load with the Pixel Watch 3, and the metrics are now rolling out to the Pixel Watch and Pixel Watch 2, as well as Fitbit smartwatches and trackers. Cardio Load ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...