ScienceAlert August 30, 2026 • 11:02

Your Body Has a 'Second Heart', And It's Crucial You Keep It Pumping - ScienceAlert

By Esra Öz

Your Body Has a 'Second Heart', And It's Crucial You Keep It Pumping - ScienceAlert

Every step, ankle flex, or rise onto your toes activates a remarkable pump below your knees.

Every step, ankle flex, or rise onto your toes activates a remarkable pump below your knees.
Your calf muscles squeeze the veins in your lower legs, helping propel blood upward toward your heart. Th… [+5305 chars]

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