Why are you likely to have a heart attack shoveling snow?

Question

I’ve always heard/been told to be careful while shoveling snow, that you’re more likely to have a heart attack. Why would I be more likely then as opposed to exerting myself during normal temperatures?

In: Other

Answer 1

1. It’s high intensity without much warm-up, often done by people who are not athletic at all

2. Cold constricts your blood vessels, making it more likely for a clot to block off a whole artery than if they were larger

3. Cold also makes some components of your blood more viscous, resulting in incrementally more common clotting