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Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.