trackers from companies like Garmin or Coros have companion apps that provide stats like VO2 max. These can give you a sense of your aerobic fitness and how ready you might be for a given race ...

Aerobic fitness is most directly characterized through ... Again, because all of these are estimates, a single score is less useful than tracking your score over time. Checking in with yourself ...

As well as heart rate tracking it measures your blood oxygen, sleep, and VO2 Max for aerobic and cardio fitness. It comes with a very good GPS plus notifications for calls and texts, which makes ...

High-intensity interval training is important, but coming back to your breath can be crucial to helping you train.

The Fitbit Inspire 3 is the best budget fitness tracker we've tested. However, at just over two years old, it's not the ...

Experts who spoke to GQ broke down the mechanisms behind this type of training and why pretty much any guy stands to benefit ...

a measure of your aerobic fitness). Tech tips you can trust – get our free Tech newsletter for advice, news, deals and stuff the manuals don’t tell you. If you don't want a smartwatch, there are ...