The mayo clinic article lists numerous conditions which make consulting a doctor a must before starting an exercise regimen. what do these conditions have in common and what conditions are not listed that might require medical attention before starting an exercise regimen? (site 1)

The Mayo Clinic article lists numerous conditions which make consulting a doctor a must before starting an exercise regimen. What do these conditions have in common and what conditions are not listed that might require medical attention before starting an exercise regimen? (Site 1)
They can all affect the heart and lungs . If present while starting a new exercise regime these conditions can cause these organs to fail if the regime is too strenuous for you.

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