Discover what the circulatory system actually does: oxygen delivery, nutrient transport, waste removal, immune support, and temperature regulation. Learn how the heart, blood vessels, and blood work together, plus science-backed tips to improve circulation and prevent common disorders.

Discover what the cardiac system does: oxygen delivery, nutrient distribution, waste removal, and vital support functions. Learn how your heart works with blood flow cycles, warning signs of trouble, and science-backed tips to maintain cardiovascular health. Includes FAQs and functional breakdowns.