This Is the Most Common Time of Day To Have a Heart Attack, According to Cardiologists
In movies and TV shows, heart attacks are very dramatic. They often happen at night, in the middle of a meal or in moments of high stress. But according to three cardiologists we talked to, heart attacks don't always look this way.
For example, Dr. William Jaffe, DO, FACOI, a cardiologist with Biltmore Cardiology, says that women having a heart attack often experience different symptoms than men having a heart attack. While both men and women having a heart attack can experience intense chest pain and discomfort, Dr. Jaffe explains that symptoms for women can also include anxiety, shortness of breath, an upset stomach, pain in their shoulder, back and arm or unusual fatigue.
Related: 8 Real People Explain Exactly What Having a Heart Attack Feels Like
He emphasizes that it's important to know what the symptoms of having a heart attack look like because heart attacks require immediate medical help.
Another difference between how heart attacks are portrayed in movies and on TV versus what they're like in real life is when they are most likely to occur. Spoiler alert: It's not at night. Keep reading to find out when heart attacks most commonly occur and the best ways to lower your risk of having one, no matter what time of day it is.
The Most Common Time of Day To Have a Heart Attack, According to Cardiologists
According to all three cardiologists we talked to, the most common time of day to have a heart attack is in the morning.
"Heart attacks can happen any time of the day, but they are more common in the early hours after waking up, between 6 a.m. and noon," says Dr. Nowwar Mustafa, MD, a cardiologist with Washington Health. Dr. Mazen Roumia, MD, an interventional cardiologist with HonorHealth, adds to this, saying, "Sudden cardiac death has been seen with a higher incidence in the morning."
Dr. Mustafa explains that when the body transitions from sleep to wakefulness, there is a surge of adrenaline. "This will raise blood pressure and make the blood a bit stickier," he says. He explains that, for someone in good health, this is not a problem. But if someone has high blood pressure, this extra surge in blood pressure could lead to a heart attack.
Related: The Silent Symptom Most People Don't Realize Could Be a Heart Issue, According to Cardiologists
When we're asleep, we're not stressed. But when that alarm clock goes off and you start thinking about everything you have to do that day, it can raise levels of the stress hormone cortisol, which is already naturally at its peak in the morning. Dr. Jaffe says that this transition can increase heart rate and cause blood vessels to constrict. This is another reason why heart attacks are most common in the morning.
Dr. Roumia explains that circadian rhythm helps regulate the cardiovascular system, particularly during sleep. "The cardiac recovery phase occurs during sleep and cardiac activation is required during the daytime to support the demand of our circulation system," he notes. When the circadian rhythm is disrupted, it increases the risk of a heart attack.
🩺SIGN UP for tips to stay healthy & fit with the top moves, clean eats, health trends & more delivered right to your inbox twice a week💊
Because of this, it's important to support your circadian rhythm as best as you can by getting a few minutes of bright sunlight early in the morning and avoiding artificial lighting close to bedtime, avoiding alcohol or caffeine too late in the day and having a consistent sleep routine.
While mornings are the most common time of day that heart attacks occur, all three cardiologists emphasize that they can happen anytime. Have you ever heard that stress can cause a heart attack? Dr. Mustafa says that this is true. He explains that when a stressful situation occurs, blood pressure goes up.
"Heart rate will go up, causing an increased demand on the heart, so that itself can trigger a problem. If that person is otherwise completely healthy, acute stress is unlikely to cause a heart attack, but if someone already has lots of risk factors, it can be a trigger for it," Dr. Mustafa says.
Dr. Mustafa adds that when someone attempts to manage stress by increasing alcohol consumption or drinking too much coffee, or stress prevents them from getting enough sleep, these are all factors that can increase the risk of a heart attack over time.
How To Lower Your Risk of Having a Heart Attack
It can be hard to sleep peacefully knowing that heart attacks are most common in the morning, but there are ways to lower your risk of experiencing a morning heart attack as well as heart attacks in general.
To lower your risk of a morning heart attack, Dr. Mustafa recommends avoiding excessive exercise immediately after waking up and limiting caffeine consumption in the morning. "All of this can raise your heart rate and blood pressure. That said, anything in moderation should be okay for most people," he says.
Instead, do what you can to establish a peaceful morning routine, which will ease the transition from blissful sleep to a stressful day. If you do find yourself feeling stressed in the morning, Dr. Jaffe recommends spending a few minutes doing deep breathing exercises, which will slow your heart rate down.
All three cardiologists say that what matters most is having habits in place that lower your risk of heart attacks in general. Dr. Roumia says that this includes avoiding tobacco use, following a heart-healthy diet, exercising regularly and maintaining a healthy weight.
"Do not underestimate the power of small changes in your life. Little things that you do as a daily habit-small, persistent changes-can often give you more gain than drastic [changes]," Dr. Mustafa says.
He recommends aiming for 30 to 60 minutes of moderate physical activity a day, eating heart-healthy meals and finding healthy ways to manage your stress. "Finally, track your numbers. Know what your numbers are. Know your risk factors. Always follow up with your doctors regardless," he explains.
Heart attacks are largely avoidable by managing existing health conditions with your healthcare provider and having healthy diet and lifestyle habits in place. Knowing this should put your mind-and heart-at ease, no matter what time of day it is.
Up Next:
Sources:
- Dr. William Jaffe, DO, FACOI, cardiologist with Biltmore Cardiology
- Heart Attack Symptoms in Women. American Heart Association
- Dr. Nowwar Mustafa, MD, cardiologist with Washington Health
- Dr. Mazen Roumia, MD, interventional cardiologist with HonorHealth
- Velazquez Sanchez, C. and Dalley, J. W. (2025). The cortisol awakening response: Fact or fiction?Brain and Neuroscience Advances. doi: 10.1177/23982128251327712
- Kelters, I. R., Koop, Y., Young, M. E., et al. (2025). Circadian rhythms in cardiovascular disease.European Heart Journal. 36(21):3532-3545
Copyright 2026 The Arena Group, Inc. All Rights Reserved
This story was originally published April 16, 2026 at 9:50 AM.