snow and heart attacks

When there is heavy snow the rates of heart attacks tend to go up for a verity of reasons. One of them being that shoveling snow was be a very strenuous activity and often people who are not fit are put most at risk because they are not used to the exercise. This is only made worse because when a body feels cold it constrains the blood vessels in the extremities to prevent loss of body heat. This increases a persons blood pressure and high blood pressure along with someone who inst used to exercise runs a high risk of having a heart attack. Furthermore, people tend to do activities that also increase blood pressure such as drink coffee eat breakfast and shovel snow early in the morning without warming up. All of these activities increase blood pressure or diver blood from the heart also increasing the risk of a heart attack.

https://www.metrohealth.org/cardiology/winter-heart-health

"some activities such as snow shoveling, walking through heavy wet snow or in a snow drift, downhill and cross-country skiing, snow-boarding, can strain the heart enough to cause a heart attack.

Snow shoveling can be more strenuous than exercising full throttle on a treadmill. While this may not be a problem if an individual is healthy and fit, it can be dangerous if not.

Shoveling, even pushing a heavy snow blower, can cause sudden increase in blood pressure and heart rate, and the cold air can cause constriction of the blood vessel and decrease oxygen to the heart. All these work in concert to increase the work of the heart and trigger a potentially fatal heart attack"