How hard to train? A Cardiologist on heart health for older athletes

I turned off comments because there were too many to respond to effectively - sorry. Older athletes can damage their hearts by training too hard, provoking complications like Atrial Fibrillation, Atrial Flutter and Coronary Artery Calcification. So how hard is "too hard"? NHS Cardiologist Dr Peter Clarkson guides us through the issue. The full interview ill be released as a podcast at the start of March.
MARC-2 Study: pubmed.ncbi.nlm.nih.gov/36597...
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