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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Thyroid conditions may make getting pregnant impossible.
Did you know?
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.