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Journal ArticleReviewProgress in cardiovascular diseases·Jul 2026

Why Your Fitness Level Predicts How Long You'll Live Better Than Step Counts

Key Insight

This review suggests treating your cardio fitness as a key health marker may matter for longevity.


This review of the evidence says being physically active and, even more so, being fit is strongly tied to living longer. Fitness measured directly beats what people report about their own activity for predicting risk. The benefits grow with more activity, and intensity matters, though the authors note some heart rhythm risks in extreme endurance athletes.

Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.