You’ve probably heard the phrase, “Exercise is the best medicine” — and for good reason.

Regular movement improves sleep, boosts energy and supports mood while also strengthening the heart and lowering stress.

It’s one of the most powerful tools for preventing, and even detecting, cardiovascular disease early, as symptoms such as shortness of breath often show up during activity before they’re noticeable at rest.

Research shows that consistent, moderate-intensity exercise is more beneficial than infrequent bursts of high-intensity activity.

That’s why I have devised simple 20-minute workout routines for every decade of life — short enough to fit into your day but designed to be done regularly to support long-term heart health.

Most health organizations recommend at least 150 minutes of moderate-intensity aerobic activity per week, so think of these regimens as a strong, efficient base to build on.

20s

You’re essentially operating at peak heart health, so the goal is to build your cardiac reserve — creating a strong buffer against aging over time.

Start with a three-minute dynamic warmup such as jumping jacks, running in place or high knees to get your heart rate up quickly.

Then move into 12 minutes of high-intensity intervals, such as running or jumping rope. Alternate bursts of near-max effort with 30 seconds of easier recovery. The goal is to push your heart rate up quickly, then let it come down during active recovery.

Finish with five minutes of strength work. Try squats, planks or push-ups, with or without weights, to build a strong foundation that supports long-term cardiovascular health. 

30s

This is a time when you’re managing early metabolic risk and improving the efficiency of your heart. 

Go for the three-minute warmup to get your body moving. Then do 12 minutes of high-intensity interval training with minimal rest.

This could look like strength circuits — squats, lunges, push-ups and step-ups — or vigorous cycling or rowing. The goal is to keep your heart rate elevated throughout the full 12 minutes.

Finish with five minutes of core work. Building strength and muscle helps make everyday movement more efficient, so you can burn more energy doing things like walking or climbing stairs.

40s

In your 40s, the focus is on prevention — lowering blood pressure and LDL (“bad”) cholesterol to reduce silent cardiovascular risk. 

Start with five minutes of brisk walking to warm up. Then move into 12 minutes of steady, higher-intensity cardio, such as fast walking, cycling or rowing. Finish with five minutes of strength work during your cooldown, using weights or resistance to build muscle and support overall cardiovascular health. 

50s

For your 50s, you’ll shift to focus on lowering your risk of heart attack and stroke by supporting vascular health, helping your blood vessels stay flexible and responsive. 

Go for a five-minute power walk to get your heart rate up. Then move into one-minute intervals: alternate a brisk pace with a more relaxed recovery pace, repeating for a total of 10 minutes. You can do this on an incline treadmill for added intensity. 

Finish with five minutes of resistance training using bands or light weights to build strength, support mobility and maintain flexibility.

60s

In your 60s, the focus is on maintaining heart strength while minimizing strain on the body.

Low-impact movements will give you a high return. A five-minute warmup can be gentle stretches, yoga or any movement that prepares your body to get going.

Then aim for 10 minutes of low-impact cardio, such as cycling, using an elliptical, walking on an incline treadmill or moving in a pool. These options deliver strong cardiovascular benefits with less stress on your joints. 

Wrap up with five minutes of balance and light-strength work to support stability, mobility and injury prevention. 

70s

In your 70s, you’re trying to stave off functional decline to maintain independence.

Begin with five minutes of gentle walking, followed by 10 minutes of continuous movement. Think cycling, chair exercises or sit-to-stand movements.

Take five minutes to gradually slow your body down. Start with one or two minutes of breathwork, such as box breathing, to help bring your heart rate down, followed by three or four minutes of gentle stretching focused on the chest, shoulders and hip flexors.

This supports posture, circulation and balance — and helps reduce fall risk. 

80s and up

The approach in your 80s is similar to your 70s, but the focus shifts even more toward safety and gentle movement rather than speed. 

Start with five minutes of a slow walk, followed by 10 minutes of light activity — this could include seated movement, tai chi or simple standing exercises. If you feel comfortable, incorporate resistance bands to help maintain strength. Finish with five minutes of a proper cooldown.

No matter your age, all forms of movement are helpful. The key is consistency. Staying active helps you track and improve important markers such as heart rate variability, resting heart rate and heart rate recovery — signals of how well your body is managing stress and maintaining cardiovascular health.

And if you do experience a health setback, a strong exercise baseline can help you recover more quickly. 

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Julie C. Delphin, MD, is a cardiologist at NYU Langone’s Joan H. Tisch Center for Women’s Health and the Center for Women’s Sports Medicine and clinical instructor in the Department of Medicine’s Leon H. Charney Division of Cardiology at NYU Grossman School of Medicine. She specializes in treating patients with a wide range of cardiovascular conditions.