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A simple, moderately severe sunburn damages the blood vessels to such an extent that it takes four to fifteen months for them to return to their normal condition.
Blype is the skin that peels off after a bad sunburn.
Body temperatures of 106 degrees Fahrenheit are not uncommon in athletes during exercise but can be fatal in an average person.
Bones only account for 14 percent of the human body's weight.
Bradycardia refers to a heartbeat slower than 60 beats a minute.
Brain-wave activity in humans changes when we catch the punch line of a joke.
British researchers in 1995 concluded that a sense of humor was dependant upon nurture, not nature. Their study involved 71 pairs of identical twins and 56 pairs of fraternal twins, and analyzed their reactions to five drawings by cartoonist Gary Larson. Results showed that the siblings had similar views about the cartoons, and that the identical twins, who have the same genes, were no more likely than fraternal twins to find the same things amusing.
By day 23, a human embryo has the makings of a heart, brain and spinal cord.
By the age of 20, most humans have lost up to 20% of their sense of smell. By the age of 60, 60% is gone.
By the age of 30, the human brain begins to lose cells at a rate of 50,000 per day.
Cells are controlled by the nucleus, which is home to the DNA, or chemical codes, giving instructions to the cells.
A sneeze can travel as fast as 100 miles per hour. It is impossible to sneeze and keep one's eyes open at the same time.
A survey conducted at Iowa State College in 1969 suggested that a parent's stress at the time of conception played a major role in determining a baby's sex. The child tended to be of the same sex as the parent who was under less stress.
A Swiss study found that a majority of women unconsciously choose mates with a body odor that differs from their own natural scents, which, as a result, ensures better immune protection for their children. Longevity magazine reported that the genes that battle disease-provoking substances also influence body odor.
A United Parcel Service delivery person typically makes up to 300 pickups or deliveries a day. That compares to someone doing 600 sets of step aerobics a day.
A University of Toronto study revealed that a person is more likely to eat twice as much in the company of others as when eating alone.
A woman's arthritic pains will almost always disappear as soon as she becomes pregnant.
A woman's heart beats faster than a man's.
About 17 minutes of baseball pitching is required to burn 100 calories.
About 75 percent of Americans will have foot problems of one sort or another at some time in their lives.
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