Get to know the functions of your heart, blood vessels, and blood itself and how they work together to maintain your health.

Your heart pumps blood from your head to your toes, provides cells with fresh oxygen, and removes waste products. Located in ...

'The key with HIIT is to exercise at a high enough intensity to influence the push of your heart, and the stretch of your blood vessels. True high-intensity intervals are three minutes or less, and ...

Adolescent athletes' cardiovascular system may adapt to increased cardiorespiratory fitness by increasing blood pressure, ...