Taking care of your heart comes down to a handful of consistent habits: staying active, eating well, sleeping enough, and knowing your numbers. Heart disease remains the leading cause of death in the United States, but the majority of cardiac events are tied to modifiable risk factors, meaning the choices you make every day have an outsized impact on your long-term odds.
How Much Exercise Your Heart Needs
The current Physical Activity Guidelines for Americans call for 150 minutes of moderate-intensity aerobic activity per week. That breaks down to about 30 minutes a day, five days a week, of something like brisk walking, cycling on flat ground, or swimming at a steady pace. If you prefer higher-intensity workouts like running, you can cut that in half: 75 minutes of vigorous activity per week provides equivalent cardiovascular benefit.
You can also mix and match. A few days of brisk walking combined with a couple of shorter runs gets you to the same place. On top of cardio, aim for at least two days per week of muscle-strengthening activity that hits all the major muscle groups: legs, hips, back, abdomen, chest, shoulders, and arms. Strength training doesn’t just build muscle. It improves how your body handles blood sugar and helps maintain a healthy blood pressure as you age.
If 150 minutes sounds like a lot, start where you are. Even small increases in activity, like taking the stairs or walking after dinner, move the needle. The biggest jump in heart protection comes from going from sedentary to even a modest amount of regular movement.
What to Eat for a Healthier Heart
Three dietary factors have the most direct impact on cardiovascular risk: sodium, saturated fat, and fiber. Getting these right doesn’t require a complicated meal plan.
Sodium: Keep intake below 2,300 milligrams per day. That’s roughly one teaspoon of table salt, but most sodium in the American diet comes from processed and restaurant foods, not the salt shaker. Reading labels is the single most effective way to cut back. Bread, deli meat, canned soups, frozen meals, and condiments are the usual culprits.
Saturated fat: Less than 10% of your daily calories should come from saturated fat. For someone eating about 2,000 calories a day, that’s around 22 grams. Saturated fat raises LDL cholesterol, the type that builds up in artery walls. It’s concentrated in red meat, full-fat dairy, butter, and coconut oil. Replacing these with unsaturated fats from olive oil, nuts, avocados, and fatty fish lowers cardiovascular risk over time.
Fiber: The American Heart Association recommends 25 to 30 grams of dietary fiber per day from food, not supplements. Fiber, especially the soluble kind found in oats, beans, lentils, and fruits, helps lower cholesterol by binding to it in the digestive tract and carrying it out of the body. Most Americans get roughly half the recommended amount. Adding a serving of beans to a meal or swapping refined grains for whole grains are easy entry points.
Know Your Numbers
A few routine measurements tell you more about your heart health than almost anything else. Knowing where you stand helps you catch problems early, when lifestyle changes alone can often reverse them.
Blood Pressure
Blood pressure is expressed as two numbers: systolic (the top number, measuring pressure when your heart beats) over diastolic (the bottom number, measuring pressure between beats). Here’s how the categories break down:
- Normal: below 120/80 mm Hg
- Elevated: 120 to 129 systolic with diastolic still below 80
- Stage 1 hypertension: 130 to 139 systolic or 80 to 89 diastolic
- Stage 2 hypertension: 140 or higher systolic, or 90 or higher diastolic
Elevated blood pressure rarely causes symptoms. Many people don’t realize they’ve crossed into hypertension until a routine check. If your numbers are in the elevated range, dietary changes and exercise can often bring them back down before medication becomes necessary.
Cholesterol
Optimal cholesterol levels look like this:
- Total cholesterol: around 150 mg/dL (above 200 is considered high)
- LDL (“bad”) cholesterol: around 100 mg/dL
- HDL (“good”) cholesterol: at least 40 mg/dL for men, 50 mg/dL for women
- Triglycerides: below 150 mg/dL
HDL works as a cleanup crew, carrying excess cholesterol away from your arteries back to the liver. LDL does the opposite, depositing cholesterol in artery walls where it can form plaque. Exercise raises HDL, while reducing saturated fat and increasing fiber lower LDL.
Blood Sugar
Fasting blood sugar between 100 and 125 mg/dL signals prediabetes, and even the lower end of that range carries measurable cardiovascular risk. Data from the Framingham Heart Study showed that women with fasting glucose of 100 to 109 mg/dL had a 1.3% four-year coronary event rate, which jumped to 2.3% at 110 to 125 mg/dL. In men, the rates were 2.9% and 3.0%, respectively, both substantially higher than those with normal blood sugar. Chronically elevated blood sugar damages blood vessel walls over time, accelerating the same plaque buildup that leads to heart attacks and strokes.
Why Sleep Matters for Your Heart
Sleep is now considered one of the core pillars of heart health. The American Heart Association added sleep duration to its “Life’s Essential 8” framework alongside traditional factors like diet, exercise, and cholesterol. The sweet spot for most adults is 7 to 9 hours per night.
During sleep, your blood pressure drops, your blood vessels relax, and your body dials down inflammation. When sleep is consistently short or fragmented, those recovery processes don’t complete. The result is a cascade of problems: your sympathetic nervous system (the fight-or-flight system) stays overactive, blood pressure remains elevated overnight, blood vessels stiffen, and low-grade inflammation persists. Over time, this combination raises risk for hypertension, diabetes, and heart disease.
Sleep disorders compound the damage. People with obstructive sleep apnea, where breathing repeatedly stops during the night, face higher cardiovascular risk driven by oxygen drops, disrupted deep sleep, and chronic sympathetic overactivation. Insomnia paired with short sleep duration (not just difficulty falling asleep but actually getting fewer hours) is also linked to higher rates of hypertension and heart disease. If you snore heavily, wake up gasping, or feel exhausted despite spending enough time in bed, those are worth investigating.
Alcohol and Your Heart
The old idea that moderate drinking protects the heart has largely fallen apart under closer scrutiny. A 2024 scientific statement from the American Heart Association laid out the evidence clearly: alcohol consumption is linked to enlargement and scarring of the heart’s upper chambers, which sets the stage for atrial fibrillation, the most common heart rhythm disorder. The relationship between alcohol and atrial fibrillation appears to be roughly linear, meaning more drinking brings more risk with no safe threshold clearly identified.
Long-term heavy use (roughly 7 to 15 drinks per day over 5 to 15 years) is associated with a weakened, enlarged heart and eventual heart failure. But damage can show up at much lower levels. One observational study found that as few as four drinks per week was associated with measurable changes in how the heart relaxes between beats. A randomized trial of people with recurrent atrial fibrillation showed that those who cut out alcohol experienced a substantial reduction in episodes compared to those who kept drinking.
If you don’t drink, there’s no cardiovascular reason to start. If you do, less is better.
Smoking and Cardiovascular Damage
Smoking damages the lining of your blood vessels, makes your blood more likely to clot, raises LDL cholesterol, and lowers HDL cholesterol. It accelerates plaque buildup in arteries throughout the body, not just the lungs. The good news: cardiovascular risk starts dropping within weeks of quitting, and within a few years, an ex-smoker’s risk approaches that of someone who never smoked. Quitting is the single highest-impact change a smoker can make for heart health, outweighing nearly any other intervention.
Putting It Together
Heart care isn’t one dramatic change. It’s a collection of ordinary habits repeated over years. Move for 30 minutes most days. Eat more fiber and less sodium. Get 7 to 9 hours of sleep. Drink less alcohol, or none. Don’t smoke. And check your blood pressure, cholesterol, and blood sugar regularly enough to catch problems before they become emergencies. None of these steps requires perfection. Each one independently lowers risk, and together, their effects compound in your favor.