Which muscle never gets tired?

Sophie, sometimes there is a problem with the valves that carry blood to the heart so not always the heart muscle itself or there can be blood clots causing a blockage its good to control weight of course but thin people also have heart attacks! My sister was born with a malformed valve not discovered until she was in her 70s it's been replaced She is like a new person now

Miracle of God's creation. The entire human body

Sophie, Heart attacks are not caused by a " tired" heart. They are caused by a build up of fatty plaques in the coronary arteries that supply the heart with oxygenated blood. This causes heart muscle death. So, eat a healthy diet

Yusuf, I agree with you on that. A higher source and power beyond any human beings,created man. Man could never accomplish, creating a perfect human. Only God Almighty can do that.

my heart 💔 is fine

after experiencing pain in the heart A &E told me I had heart fatigue.

Castra, There are many other reasons for heart failure. Healthy diet may help but not a cure all.

Sophie, I am asking the same question.

Then why do we have heart attacks??