"Testosterone"

Testosterone is a steroid hormone from the androgen group and is found in mammals, reptiles, birds,and other vertebrates. In mammals, testosterone is primarily secreted in the testicles of males and the ovaries of females, although small amounts are also secreted by the adrenal glands. It is the principal male sex hormone and an anabolic steroid.

What Is "Prostate"

The prostate prostates, literally "one who stands before", "protector", "guardian"is a compound tubuloalveolar exocrine gland of the male reproductive system in most mammals.In 2002, female paraurethral glands, or Skene's glands, were officially renamed the female prostate by the Federative International Committee on Anatomical Terminology.
The prostate differs considerably among species anatomically, chemically, and physiologically.

What Is "Coulrophobia"

Coulrophobia is a fear of clowns. The term is of recent
origin, probably dating from the 1980s,and according to one analyst, "has been coined more on the Internet than in printed form because it does not appear in any previously published, psychiatric, unabridged, or abridged dictionary." However, the author later notes, "regardless of its less-than-verifiable etymology, coulrophobia exists in several lists".The condition is a specific phobia (DSM-IV Code 300.29).

Newton's 3rd Law

 Newton's 3rd law may be formally stated:
"Forces always occur in pairs. If object A exerts a force F on object B,
 then object B exerts an equal and opposite force –F on object A"

or
 in slogan style:
"Every action has an equal and opposite reaction"
Note the important provision: two objects must be involved! There exists a whole set of situations where two equal and opposite forces act on the same object, canceling each other so that no acceleration (or even no motion) occurs. This is not an example of the third law, but ofequilibrium between forces. Some examples:
    A heavy object stands on the floor, pulled down by the Earth with a force mg