When temperatures plunge, your heart rate and cardiovascular stress can shift in surprising ways — sometimes showing changes on your ECG before you even feel symptoms. This post would explain how breathing cold air and vasoconstriction influence rhythm, how ECG tracings reflect those changes, and what signs to watch for. It blends approachable physiology with practical winter heart ca... https://sunfox.in/blogs/how-does-cold-weather-affects-your-heart/