Incorporating anaerobic exercise (zone 5) is essential for improving VO2 max and reducing all-cause mortality.

holds up

Research strongly supports the link between high VO2 max and improved longevity, making it one of the most robust indicators of metabolic and cardiovascular health (observational…

noli's read

Research strongly supports the link between high VO2 max and improved longevity, making it one of the most robust indicators of metabolic and cardiovascular health (observational studies, e.g., JAMA Network Open). High-intensity interval training (HIIT), which utilizes zone 5, is recognized by numerous meta-analyses as being particularly effective for increasing VO2 max, often more rapidly than moderate-intensity continuous training. The assertion that zone 5 is 'crucial' is supported by the fact that to maximize this specific indicator, the body must be pushed close to its maximal cardiorespiratory capacity. There is no exaggeration here; Peter Attia relies on a well-established scientific consensus in exercise physiology. It is, however, important to note that high intensity requires an adapted progression to avoid injury, a point often emphasized by the author in his overall recommendations. This approach is a validated strategy for optimizing aerobic capacity and long-term health.

the sources

Claimed by Peter Attia. Noli grades the claim, never the person.

Decoded by Noli · July 18, 2026 · the original post

What the graded evidence says

Evidence: B

Effect: mindfulness meditation vs active control on anxiety, depression, pain, and attention (meta-analysis of RCTs) — anxiety effect size 0.38 (95% CI 0.12-0.64) at 8 weeks; depression 0.30 (0.00-0.59); pain 0.33 (0.03-0.62); low/insufficient evidence for effects on attention
Measured on: diverse adult clinical populations

Effects on stress and mood are small-to-moderate; the evidence that meditation improves attention or concentration specifically is weak. It was not better than other active treatments like exercise or therapy.