When it comes to your heart, the link between staying active and atrial fibrillation (Afib) is a bit of a balancing act that researchers are still exploring. We know that regular movement is one of the best things you can do for your health, and for most people, it actually helps prevent Afib. However, some studies suggest that for certain individuals, a lifetime of very intense endurance training might actually make the heart more prone to these irregular rhythms.
This "two-sided" effect reminds us that there isn't one perfect exercise rule for everyone; it depends on how the intensity and amount of your workouts mesh with your own body’s biology. If you are living with Afib or are at a higher risk for it, the most helpful path is to use a plan based on the latest science. The goal is to find that "just right" amount of activity that keeps your heart strong while being careful not to upset its natural rhythm.
The connection between Afib and exercise
The 2024 Clinical Guidelines for the treatment of Afib suggest that staying active is a powerful tool for preventing the condition or keeping it from coming back. However, there is a notable exception: research indicates that excessive endurance exercise may actually promote Afib in some people. These guidelines recommend personalized exercise programs for those with paroxysmal or persistent Afib, as finding the right balance can improve fitness and help keep the heart’s rhythm steady.
In the sections below, we explore the types of exercise generally recommended for people living with Afib and why movement is so beneficial for lowering your risks. We also take a closer look at the science behind why very intense endurance training might sometimes lead to Afib recurrence, helping you understand how to protect your heart while staying fit.
How lifestyle impacts Afib
The AF-CARE model provides a structured, patient-centered framework for Afib management. Each element of AF-CARE contributes to improving outcomes, but the “C” (Comorbidities and risk factors) is especially crucial. It is important to remember that Afib rarely travels alone; it often shows up alongside other health challenges like high blood pressure, heart failure, diabetes, weight concerns, or sleep apnea. These overlapping conditions can make Afib more likely to return or worsen, and they can also increase the chances of serious complications like strokes or hospital stays.
The good news? Taking charge of these risk factors can make a real difference. Evidence suggests that being proactive, by managing things like your blood pressure or weight, can lighten the burden of Afib on your body. Doing so not only improves your daily quality of life but also helps your heart medications or treatments work more effectively to keep your rhythm steady.
Exercise is central to comorbidity management
Adjusting your lifestyle—especially by following a regular exercise routine—is a key part of the modern "AF-CARE" approach to managing heart health. Rather than just focusing on one thing, staying active helps you tackle several health goals at once. Exercise helps to keep your blood pressure steady, your blood sugar in check, your weight managed, and your sleep more restful. Exercise directly addresses the following comorbidities:
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Hypertension: Regular physical activity contributes to maintaining optimal blood pressure.
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Diabetes: Exercise improves insulin sensitivity and supports blood sugar control, thereby reducing Afib recurrence.
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Obesity: A weight reduction of ≥10% is associated with fewer Afib symptoms and lower recurrence rates after treatment. Exercise is a key enabler of sustainable weight loss.
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Sleep apnea: Increased cardiorespiratory fitness may mitigate the severity of sleep apnea and improve Afib treatment response.
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Physical inactivity: Tailored exercise programmes improve cardiorespiratory fitness and are directly linked to reduced Afib burden.
Exercise recommendations based on guidelines
When considering a lifestyle change the most important thing is to start. Creating a regimen that you are able to follow is key for this change to take place. What do the professionals say about exercise?
The ESC Guidelines suggest aiming for about 150 minutes of moderate activity—like a brisk walk—or 75 minutes of more vigorous exercise each week. They also recommend including activities that strengthen your muscles and bones, such as light weight training, twice a week. These targets are great goals to keep in mind for maintaining your heart's health and keeping your body strong as you age.
However, it is important to remember that these suggestions are not a strict rule for everyone. Your own exercise plan should be shaped by your personal health needs and what you feel capable of doing safely. Finding a routine that fits your unique circumstances is the best way to enjoy the benefits of staying active while looking after your heart's rhythm.
Changing from a sedentary lifestyle to an active one is a crucial step for changing your lifestyle and beginning to take control of your Afib. The CARDIO-FIT study showed that fitness predicts arrhythmia recurrence and overall burden of Afib in obese individuals with symptomatic Afib. This highlights how powerful exercise can be in not only reducing the risk of Afib but also mitigating its effects.
Always consult your healthcare professional before making significant changes to your routine to ensure it is a safe, effective and sustainable exercise regime for you.
Some light to moderate intensity exercises that may benefit you include:
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Yoga
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Brisk walking
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Pilates
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Cycling
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Tai-Chi
Can you exercise too much?
Is there such a thing as too much exercise? Several studies show daily physical activity is crucial to maintaining a healthy heart and overall well-being. Just 30 minutes of (brisk) walking or cycling each day can have positive effects. Light to moderate exercises, like yoga and daily walks, have been linked to positive outcomes but long-term very intense exercise may cause adverse effects and increased Afib due to the stress inflicted on the heart muscle. This stress has been linked to inflammation and atrial fibrosis. Athletes are also more prone to increased electrolyte imbalances and autonomic activation.
A recent study looked at the risk of Afib in athletes compared to non-athletes. Here’s what researchers found:
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Athletes had more than double the risk of Afib compared to non-athletes.
Athletes were 2.5 times more likely to develop Afib than people who don’t regularly train at high levels. -
Athletes in mixed sports, (e.g. soccer, basketball, rugby) where endurance and bursts of high intensity are combined, had a higher risk of Afib than those in pure endurance sports (e.g. long-distance running or cycling). Though other studies have shown the opposite.
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Younger athletes (<55 years) had greater risk than older athletes.
In fact, younger competitive athletes were more likely to develop Afib than those 55 and older. This increased risk in younger athletes has been shown in multiple studies.
It seems there is a U-shaped relationship between exercise intensity and Afib risk. This means that regular moderate exercise shows beneficial effects through mitigating risk factors and comorbidities of Afib but vigorous high-intensity endurance training may have a negative effect of Afib in the long run.
Use MyAfib to find a routine that works for you
Regular exercise is one of the most powerful tools in managing Afib, helping improve heart health, fitness, and overall well-being while reducing the likelihood of episodes. By tracking your activity and Afib symptoms with MyAfib, you can see how exercise affects your Afib occurrence, symptoms, and overall health.
Set achievable goals, monitor patterns, and share the insights with your peers and healthcare team. This empowers you to take control of your own journey, while contributing to a growing community of patients using their experiences to advance understanding of Afib and the real-world impact of lifestyle choices.
