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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
Did you know?
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.