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If blood is red, why do veins look bluish?Blood is always red, and veins look blue or green because the skin filters light wavelengths differently.
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What is a normal heart rate?Monitoring your heart rate can help you track your fitness level and overall health.
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Why You Should Check Your Blood Pressure in the MorningDoes time of day matter when it comes to taking blood pressure?
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Here's What a Single Milkshake Does to Your Blood VesselsA chocolate milkshake may be bliss for your taste buds, but it's not so good for your blood vessels.
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Sweet Therapy: Chocolate May Help Prevent Irregular HeartbeatEating a few ounces of chocolate a week may be a sweet way to lower your risk of atrial fibrillation, a new study finds.
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Staying hydrated may reduce the risk of heart failureDrinking enough fluids is important for numerous bodily functions, including helping the heart pump blood more easily.
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11 Surprising Facts About the Circulatory SystemThe human circulatory system was once a subject of great mystery, but now, modern science has revealed its inner workings. Here are 11 surprising facts about the human circulatory system.
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The Circulatory System: An Amazing Circuit That Keeps Our Bodies GoingThe heart, lungs and about 60,000 miles of blood vessels work together to keep blood pumping through our bodies.
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Man dies from caffeine overdose after drinking equivalent of 200 cups of coffeeCaffeine powders can be dangerous because they are much more potent than typical caffeine-containing beverages.
