UNLIKE other types of muscles, the heart never rests and never gets tired. It beats about 72 beats a minute 24 hours a day for as long as you live. Every day, the heart is pushing blood through a 96,000km network of blood vessels to nourish the body.
The heart expands and contracts about 100,000 times each day, recycling 2,000 gallons of blood through your body. In a year it contracts 36 million times and by age 65 – at 72 beats a minute, your heart would have beaten 2.5 billion times! Therefore, the heart, being the hardest working organ in the body, requires a tremendous amount of continuous energy.
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