VO2 max is the maximum amount of oxygen your body can absorb and use during exercise, and it is a good benchmark for measuring your aerobic fitness levels. There is no one "good" VO2 max that every single person should shoot for, but everyone should aim for a good or higher fitness score (60 and higher percentile) . VO2 max scores can vary based on a number of factors in addition to fitness, such as your gender, age, and genetics. Here are some averages based on sex and age that you can use for reference:

• For a 30-year-old male, a VO2 max of 49-56 would be classified as “good,” and a VO2 Max of 56 or greater as “superior” .
• For a 30-year-old female, a VO2 max of 45-52 would be classified as “good,” and a VO2 Max of 52 or greater as “superior” .
• The average sedentary (inactive) male achieves a VO2 max of about 35 to 40 mL/kg/min, and the average sedentary female scores approximately 27 to 30 mL/kg/min.
• A good VO2 max for a 25-year-old male is 42.5-46.4 mL/kg/min, while a good value for a 25-year-old female is 33.0-36.9 mL/kg/min.

It is possible to increase your VO2 max through training, and it is a strong predictor of your cardiovascular health as you age.