Shovelling Snow and Heart Attacks: Warning Signs and What to Do
Shovelling snow is one of the most physically demanding things a person can do. Most Edmonton adults do it regularly from October through March without giving it much thought.
For anyone over 45, or anyone with a known heart condition, that habit carries a real cardiac risk worth understanding before the first significant snowfall.
This article explains why Shovelling strains the heart, what heart attack warning signs actually look like during physical activity, and what to do if someone near you collapses.
A short list of safer Shovelling habits is included at the end.
Why Does Shovelling Snow Put Strain on the Heart?
Several things hit the cardiovascular system at the same time when you shovel in the cold, and it is that combination that makes shovelling harder on the heart than most people expect.
Cold air causes blood vessels to constrict. That raises blood pressure and forces the heart to pump harder. Shovelling itself spikes your heart rate quickly, sometimes as fast as a sprint, even though it does not feel that intense. Gripping and lifting a loaded shovel adds isometric pressure to the cardiovascular system on top of that. And if you are heading outside first thing in the morning, your blood pressure is naturally higher at that time of day and your blood is more prone to clotting.
These factors do not arrive one at a time. They stack.
Heart Attack Signs
This is the section worth reading carefully. Symptoms during physical exertion are sometimes dismissed as breathlessness, muscle soreness, or general fatigue. They are easy to explain away. Do not wait to see if the feeling passes.
Stop what you are doing and call 911 if you notice:
Chest pain, pressure, tightness, or a squeezing sensation
Discomfort spreading to the left arm, jaw, neck, or upper back
Sudden shortness of breath that does not match how hard you are working
Nausea or lightheadedness alongside chest discomfort
Cold sweating that comes on suddenly, without obvious reason
A strong sense that something is seriously wrong
Women often experience symptoms that differ from the classic chest-clutching image. Fatigue, nausea, and jaw or upper-back discomfort can be the primary signs, sometimes without noticeable chest pain. If anything feels off and unusual during or after shovelling, treat it seriously.
When Should You Call 911?
Right away. Not after a few minutes of rest, not after trying to walk it off.
Call 911 at the first sign of any symptoms above, especially during or right after exertion in the cold. Paramedics can begin treatment on the way to hospital. That window matters. When you call, tell the dispatcher the person was shovelling snow and describe the symptoms clearly.
Do not drive the person yourself.
What To Do If Someone Collapses
If someone near you collapses and is unresponsive and not breathing normally, act immediately.
Call 911, or direct someone specific nearby to call while you start CPR.
Begin hands-only CPR. Place the heel of your hand on the centre of the chest, interlock your fingers, and push down hard and fast. Aim for 100 to 120 compressions per minute. Keep going until paramedics arrive or an AED is available.
Use an AED if one is nearby. Many Edmonton arenas, workplaces, and public buildings have them. Turn it on and follow the voice instructions. The device walks you through every step.
Starting CPR quickly is what gives the person a real chance. According to the Heart & Stroke Foundation Canada, bystander CPR before paramedics arrive significantly improves survival outcomes for cardiac arrest. Every minute counts.
Safer Shovelling Habits
These habits will not eliminate the risk entirely. Results depend on your individual health, fitness, and conditions on the day. That said, they meaningfully reduce the load on your heart:
Warm up indoors first. A few minutes of light movement helps prepare your heart rate and circulation before you hit the cold air.
Push snow rather than lift and throw it. Pushing keeps the effort more controlled. Lifting and throwing spikes exertion quickly.
Take a short break every 10 to 15 minutes. Sustained effort without rest keeps your heart rate elevated without recovery. Short breaks help.
Use a smaller shovel blade. Less snow per load means less force per lift.
Skip Shovelling after a large meal or alcohol. Both affect circulation and add to the cardiovascular strain that is already present.
Stop if anything feels off. Chest tightness or unusual breathlessness during Shovelling is a reason to stop, not push through.
If you have a history of heart disease, high blood pressure, or a previous cardiac event, talk to your doctor before shovelling season. A snowblower or hired help may be the right call.
Be Ready Before It Happens
Knowing what to do matters as much as recognizing the signs. CPR is a skill that anyone can learn, and in a cardiac emergency, a trained bystander can make a real difference in outcome.
At Lifesaver YEG, our CPR/AED and Basic First Aid (Emergency First Aid) courses are built for practical readiness. Classes are small, instruction is hands-on, and you complete certification in a single session. Our instructor is a Registered Nurse with direct experience in resuscitation and cardiac emergencies.
Browse upcoming CPR/AED and Basic First Aid course dates at Lifesaver YEG and register online before the snow season starts.
Frequently Asked Questions
Is shovelling snow actually dangerous for healthy adults?
For most younger, otherwise healthy adults, Shovelling is manageable exercise. The risk rises significantly for adults over 45, people with heart conditions, high blood pressure, or diabetes, and those who are largely sedentary. Cold temperatures increase cardiovascular strain for anyone.
What is the most important thing to do if someone has a heart attack while Shovelling?
Call 911 immediately. Do not wait to see whether the symptoms improve on their own. Every minute without circulation to the brain and heart reduces the chance of recovery.
Can I do CPR if I have never been trained?
Yes. Untrained bystanders can perform hands-only CPR by calling 911 first and following the dispatcher's instructions. Formal CPR training builds the muscle memory and confidence to act faster and more effectively when it counts.
How long does CPR/AED certification take at Lifesaver YEG?
CPR/AED courses are typically completed in a few hours in a single session. Basic First Aid (Emergency First Aid) with CPR/AED takes approximately one day. Certification is provided upon successful completion.
Are Lifesaver YEG certifications accepted by Edmonton employers and healthcare organizations?
Lifesaver YEG is an authorized training partner for the Canadian Red Cross and Heart & Stroke Foundation Canada. Their certifications are recognized by Alberta Health Services, Covenant Health, and many Edmonton-area employers, schools, and colleges. If you have questions about a specific organization's requirements, confirm directly with that organization before registering.
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