Why is it healthy to strain your heart through exercise, but unhealthy to strain it through stress, caffeine, nicotine etc? What is the difference between these kinds of cardiac strain?

Question

Why is it healthy to strain your heart through exercise, but unhealthy to strain it through stress, caffeine, nicotine etc? What is the difference between these kinds of cardiac strain?

In: 12816

Answer 1

I had also been told that feeling adrenaline in situations where you’re not in need of adrenaline (like playing a video game) is also unhealthy, makes sense