Maybe your smartwatch has been telling you your VO2 max for a while now, but you’re not sure how accurate it is. Or maybe you’ve recently been targeted by social media ads for fancy running labs ...

VO2 max is presented as a number and represents the maximum amount of oxygen a runner can consume in millilitres per kilogram of body weight in one minute (mL/kg/min). Although that might sound ...

Your VO2 max score is a key indicator of your cardiovascular fitness – and you don’t need to visit a lab to work it out ...