Shoveling snow can be back-breaking work especially when the flakes just keep on coming. Such exertion can also bring on a heart attack.

Tisha White, Resuscitation Program Manager (Atlantic) with Heart and Stroke, says the number of heart attacks is higher in the winter months than the warmer months by about 10 per cent.

Moving heavy snow in a short time is strenuous, causing the heart rate to increase.

The signs of snow-related exertion can include chest discomfort, sweating, upper body discomfort, nausea, shortness of breath and lightheadedness.

White says if you do experience any of those symptoms, do not ignore them.

She says to call 911 immediately.