Why does an elevated pulse from anger/anxiety contribute towards heart problems, but during exercise a fast pulse is healthy?

Question

I recently had a terrible disagreement with someone and everytime I think about it I start shaking and my heart starts pounding from adrenaline, which according to Google is unhealthy. But our hearts are accelerated when exercising, which is supposed to be a good thing – so what is the difference?

In: Biology

Answer 1

Think of throwing a baseball, throw it really hard like trying to strike out a batter. Now do the exact same thing and intensity with an empty hand. It’s hurts like hell and causes eventual damage. The ligaments and muscles have something to push against, your heart and vessels need the same thing.