Now deep into training for his first marathon, Andy hasn’t just increased his mileage over the past few weeks – he’s also increased his VO2 max. But what exactly is VO2 max and how did Andy manage to improve it?
VO2 max is a measure of your cardiovascular fitness and easier to get to grips with than you might think. And even better? You can track your VO2 max with just a Garmin watch…