Both walking and running are excellent cardiovascular exercises, but they offer different benefits.
Walking:

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Low-impact and easier on joints.
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Improves mood and heart health.
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Great for beginners and older adults.
Running:
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Burns more calories in less time.
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Builds endurance and strengthens muscles.
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Reduces risk of heart disease faster.
👉 The best choice is the one that fits your fitness level and lifestyle. For many people, combining both works best.