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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
The average adult has about 21 square feet of skin.