Cardiovascular System Guide: Heart Health & Exercise Effects

What are the four parts of the cardiovascular system? Understand how exercise, smoking, and serotonin influence heart health and normal cholesterol ranges.

Mountain biker on trail in front of cliff, elevated view

3 Ways to Strengthen Your Cardiovascular System

The cardiovascular system consists of your heart and blood vessels and is responsible for transporting oxygen and nutrients throughout your body. Physical activity strengthens your cardiovascular system — "

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