Sometimes, life kicks you out of the game and forces you to watch from the side. And if this happens, it's not a gentle "knock, knock, you need to take a break now", it's a violent, painful reality check which leaves you with a 30cm scar on your chest after a six hours surgery. You are not made of steel, you are not invincible. And it does not only "happen to others". Do regular checkups, and listen to your body. It saved my life.