VO2 Max as a Health Signal
Higher cardiorespiratory fitness is consistently linked with lower all-cause mortality. It is one of the strongest modifiable predictors in preventive health.
You can improve it at almost any age with structured training.
Training Split
Use mostly Zone 2 base work plus one controlled high-intensity session weekly. This supports adaptation without excessive fatigue.
Progress should feel challenging but repeatable.
Retesting
Reassess every eight to twelve weeks using the same protocol. Look for trend improvements in pace, power, or heart-rate response.
Combine VO2 work with strength training for full-spectrum longevity fitness.