How much of the average body is muscle?
Most men’s bodies are composed of about 40 percent muscle.
Women’s bodies are 30 percent muscle.
Actually called Newton’s law of gravitation, it describes the degree to which one body of matter attracts another. That attraction is in direct proportion to the product of the bodies’ masses, and in inverse proportion to the square of the distance between them. This law can be expressed in a formula first set forth in…
Sigmund Freud’s original term for the unconscious mind was not id but es, the indefinite pronoun it in German. Freud borrowed that term from a physician, Georg Groddick, who in turn had borrowed it from his teacher Ernst Schweninger. As Freud’s ideas became popular in English-speaking countries, translators felt that simply calling the unconscious it…
Smiling is easier on the face than frowning. It takes 17 muscles to smile and 43 to frown.
A poll of 3,000 Americans yielded the following top five fears: 1. Speaking before a group. 41 percent 2. Heights. 32 percent 3. Insects and bugs. 22 percent 4. Financial problems. 22 percent 5. Deep water. 22 percent
Assuming that the heart beats at least once a second, by the time a person is 70, his or her heart will have beat at least 2.8 billion times.
Charles Darwin did not come up with the phrase survival of the fittest. The British philosopher and scientist Herbert Spencer introduced the phrase in Principles of Biology (1864-1867) as a way of describing Darwin’s theory of natural selection.