Meet VO2 maxxing: The fitness ‘trend’ that could help you live longer

Key Points:

• VO2 max, a long-established measure of maximal oxygen consumption, has become a popular fitness metric for gauging cardiorespiratory fitness and overall health, often tracked via smartwatches and fitness apps.
• Research shows a strong link between higher VO2 max levels and longer lifespan, as well as reduced risk of heart disease, strokes, and early mortality, with significant studies confirming these benefits across diverse populations.
• Improving VO2 max requires consistent physical activity, especially aerobic exercises like running, swimming, cycling, and high-intensity interval training (HIIT), rather than quick hacks or shortcuts.
• Wearable devices provide estimates of VO2 max, but lab tests remain the most accurate; individual VO2 max varies naturally with age, genetics, and body composition, so it should be viewed as one of many health indicators.
• The key message is that fitness is about sustainable, regular movement that supports long-term health and function, not just chasing high numbers or engaging in extreme routines driven by "maxxing" culture.