Roughly half of the body’s VO2 max is determined by genetics. Age is also a factor. Improvements are nonetheless possible https://www.economist.com/science-and-technology/2026/03/27/should-you-track-your-vo2-max?taid=6a5d9d5aacbde00001575d95&utm_campaign=editorial-social&utm_content=discovery.content&utm_medium=social-media.content.np&utm_source=twitter