You don't have to have been using sports watches for as long as I have to suspect that, while useful, the various readings they provide aren't always 100% accurate. Though this is improving alongside ever more clever technology, it still isn't perfect. Just the other day, I glanced down to see my watch (I won't shame the brand) was telling me I was -167 feet below sea level. I can assure you, I was very much above the domain of the fishes.
So, have you ever been curious about how accurate your watch's VO2 max estimate actually is? My husband and I certainly have. With the readings from our Garmin watches to compare with, we went along to a lab to have ours measured properly – and it was an interesting experience.
