Exercise and Heart Disease: Training for a Healthier Heart

Exercise and heart disease are closely linked: regular physical activity is one of the most effective ways to lower your risk. Here’s how it helps your heart, how much to do, and how to start safely, especially if you’ve been inactive for a while.

According to the British Heart Foundation, heart and circulatory diseases are among the leading causes of death in the UK. Many of the risk factors behind them, such as high blood pressure, high cholesterol, excess weight and type 2 diabetes, can be improved with lifestyle changes. Exercise is near the top of that list.

See your GP before starting if you have a heart condition, high blood pressure, or get chest pain, breathlessness, dizziness or palpitations. If you get chest pain during or after exercise, stop immediately and call 999. Exercise supports medical treatment for heart conditions, it never replaces it. Keep taking any prescribed medication and follow your care team’s advice.

How exercise and heart disease risk are connected

Regular physical activity helps your heart in several ways at once:

• Blood pressure: regular exercise can help lower blood pressure, one of the major risk factors for heart attacks and strokes.
• Cholesterol: activity can improve your blood fat profile, especially alongside healthier eating.
• Weight: exercise helps you reach and keep a healthier weight, which reduces the strain on your heart.
• Blood glucose: active muscles use glucose and become more sensitive to insulin, lowering the risk of type 2 diabetes, which itself raises heart disease risk.
• Heart fitness: over time your heart becomes more efficient, pumping more blood with each beat.

Large studies also link higher fitness with a lower risk of dying early, which we cover in our article on exercise and longevity.

Aerobic and strength training both matter

Aerobic exercise, such as brisk walking, cycling, swimming or jogging, is the type most people think of for heart health, and for good reason. It trains your heart and lungs directly.

Strength training matters too. It builds muscle, helps with blood glucose control and weight, and keeps you capable as you age. For most people the best approach combines the two. Our guide to cardio vs strength training explains how they fit together.

How much exercise for heart health?

The UK Chief Medical Officers’ physical activity guidelines suggest adults aim for:

• At least 150 minutes of moderate activity a week, or 75 minutes of vigorous activity, or a mix.
• Strength activities on at least 2 days a week.
• Less time sitting, with regular breaks from long periods of being still.

Moderate activity means your breathing is faster and you feel warmer, but you can still talk. Vigorous means you can only say a few words before needing a breath. If you sit most of the day, our article on fixing a sedentary lifestyle is a good place to start.

Starting safely

If you’ve been inactive, the key is to build up gradually:

1. Walk first. Start with 10 to 15 minutes a day and add a little each week. Our guide to daily steps shows how to build your count. Local options like the walks around Highgate and Hampstead Heath make it enjoyable.
2. Warm up and cool down. Spend 5 to 10 minutes easing in and out of each session.
3. Add strength twice a week. Start light with simple movements like sit-to-stands, wall presses and rows, and breathe steadily rather than holding your breath.
4. Build intensity slowly. Only add harder sessions once you have a base of fitness and your GP is happy.
5. Listen to your body. Stop if you feel unwell, very breathless, dizzy or get any chest discomfort.

If you’ve had a heart attack or heart surgery, ask your care team about cardiac rehabilitation. It’s a supervised NHS programme designed to help people return to exercise safely, and it’s the right place to start before training on your own or with a personal trainer.

A heart-friendly week

Once you’ve built a base, a realistic week for someone working full-time might look like this:

• Monday: 30-minute brisk walk, plus 20 minutes of strength work: squats, presses, rows and carries.
• Tuesday: walk to and from work or at lunchtime.
• Wednesday: 30 minutes of cycling, swimming or a longer walk with some hills.
• Thursday: strength session, focusing on legs and back.
• Friday: easy walk.
• Weekend: a longer walk, bike ride or something active you enjoy with family or friends.

That adds up to well over the weekly guideline without any single session being long or exhausting. On busy days, three 10-minute walks still count. The aim is a routine you can keep for years, because the benefits for your heart depend on staying active over the long term, not on one hard month.

Other habits that support your heart

Exercise works best alongside other healthy habits: not smoking, keeping alcohol within UK guidelines, eating plenty of vegetables, fruit, wholegrains and fish, managing stress and getting enough sleep. Regular check-ups with your GP, including blood pressure and cholesterol checks, help you know where you stand.

At SYP Fitness, our injury-safe personal training starts at a level that suits you and builds up carefully, working alongside any advice from your GP or care team.

Want this coached 1-to-1? Want a safe, steady plan to get fitter and protect your heart? Book a free consultation at our Archway studio.

Frequently asked questions

Can exercise reduce the risk of heart disease?

Yes. Regular physical activity helps lower blood pressure, improve cholesterol, manage weight and control blood glucose, all of which reduce heart disease risk. It supports, rather than replaces, any medical treatment.

What is the best exercise for heart health?

Aerobic exercise such as brisk walking, cycling or swimming trains the heart directly, and strength training twice a week adds further benefits. A mix of both works best for most people.

How much exercise do I need for a healthy heart?

UK guidelines suggest at least 150 minutes of moderate activity or 75 minutes of vigorous activity a week, plus strength work on at least 2 days.

Is it safe to exercise with a heart condition?

Many people with heart conditions can exercise safely, but speak to your GP or cardiac team first. If you get chest pain during exercise, stop and call 999.

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