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Did you know?
Your heart beats over 36 million times a year.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
Did you know?
The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.