One quarter of the human brain is used to control the eyes.
43
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
Redheads require up to 20% more anesthesia to be knocked out.
112
Clinophobia is the fear of beds!
30
At age 70, more than 70 percent of men are still potent!
29
Redheads require more anesthesia to 'go under' than other hair colors do.
51
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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