You should engage in over two hours of cardio per week, either through moderate or vigorous-intensity exercise. Learn how to tailor your cardio routine to your individual health goals.

Fitbit's cardio load feature was confusing and some users called it dangerous. A change in the new Fitbit app tracks it weekly, with better results.

The NHS recommends we aim for 150 minutes of moderate intensity exercise or 75 minutes of vigorous exercise per week. Here, ...