For example, anabolic steroids such as Testosterone have a tendency to promote water retention through their ability to be aromatized into Estrogen via the aromatase enzyme. While such an effect might not be a concern for a strength athlete or a powerlifter (such an effect might even be beneficial or desired in such sports), this is not a desired effect for athletes involved in sports that involve speed and swiftness, such as sprinting. Instead, a sprinter, for example, would more likely opt for an anabolic steroid such as Stanozolol ( Winstrol ) or Oxandrolone ( Anavar ), which are two anabolic steroids unable to convert into Estrogen and therefore the issue of water retention, and therefore the issue of added weight that would slow the athlete down is avoided. Many athletes may also elect to ‘stack’ anabolic steroids in a given cycle (stacking refers to the practice of combining more than one anabolic steroid in a cycle). In the case of cycle stacks, an individual might be able to increase the synergy and synergistic effects between the anabolic steroids to create a highly anabolic environment or to create a stack that might assist the user in favoring certain particular athletic or physique goals. These are some of the major reasons as to why the development of different types of steroids has been done.
Let us next consider that the ethical teachings of Jesus do not usually undertake to give mere rules, but to set forth principles. The Jewish traditions had run everything into rules. They called it making a fence around the law, to encompass it with all manner of minute directions, which would keep men away from breaking the law. It is a general tendency of mankind to save themselves the trouble of thinking, by expressing principles in the form of rules. Many schools and some colleges undertake to regulate the whole behavior of the student by a set of rules; and churches sometimes show the same tendency. Jesus evidently set himself against this disposition. He did not wish his followers to be burdened by stiff and narrow rules; he taught them principles, which are at once more comprehensive and more flexible. And the thinking which is required in order to apply principles brings with it a most valuable part of our moral discipline.
late 13c., "restorative powers of the body, bodily processes; powers of growth;" from Old French nature "nature, being, principle of life; character, essence," from Latin natura "course of things; natural character, constitution, quality; the universe," literally "birth," from natus "born," past participle of nasci "to be born," from PIE *gene- "to give birth, beget" (see genus ).
From late 14c. as "creation, the universe;" also "heredity, birth, hereditary circumstance; essential qualities, innate disposition" (. human nature ); "nature personified, Mother Nature." Specifically as "material world beyond human civilization or society" from 1660s. Nature and nurture have been contrasted since 1874. Nature should be avoided in such vague expressions as 'a lover of nature,' 'poems about nature.' Unless more specific statements follow, the reader cannot tell whether the poems have to do with natural scenery, rural life, the sunset, the untouched wilderness, or the habits of squirrels." [Strunk & White, "The Elements of Style," 3rd ed., 1979]