What Is VO2max?
by Beth Skwarecki on Vitals, shared by Beth Skwarecki from Lifehacker on (#586Z0)
With the news that the Apple Watch will soon be able to measure VO2max more effectively (they say) than ever, you may be wondering what VO2max even is. It's a measure of your aerobic fitness, and you don't need a gadget to figure yours out.