Your nerve system is your body's master communication system. Your brain - your body's central processing unit - receives information from every other system. Information on sight, sound, touch, taste, and smell is constantly bombarding your brain. Information on muscle activity, placement of your arms

The metaphor linking the human brain with computer hardware is now so well known that it features regularly in news media stories. But computers have only been with us since Colossus and ENIAC (electronic numerical integrator and computer) were constructed in the mid-1940s. The metaphor linking the code

You are the lucky owner of a magnificent piece of biological machinery - the human brain. Your brain is always on, performs lightning-fast calculations, and is a whiz at making connections between seemingly unrelated factors and observations. The only downside is that your brain didn't come with an owner's

Physicians and scientists have often called the human body a beautiful instrument. The sense in which this metaphor is applied is primarily mechanistic. The human body is a beautiful instrument in that its parts mesh properly and each component performs its function superbly. The metaphor "beautiful

What's your worldview? Are you an optimist or a pessimist by nature? Do you always expect good things to happen or are you waiting for the other shoe to drop? Our mental attitude affects how we interact with others and how we respond to events and the comings and goings in our daily lives. Remarkably,

For thousands of years, humanity has struggled to understand the place of men and women in the universe. All sorts of explanations have been brought forward, many proposing that humanity is part of a greater whole and helps contribute to the welfare of all. Equally many theories suggest that humanity

Renewability, sustainability, and energy conservation are all over the news. Every newspaper's front page and every television nightly news program features sustainability daily. These are important issues, not only for the health of our planet, but also for our physical health and well-being. Our physical

Back in the day, there were no personal trainers. If you needed to learn how to exercise, you got a subscription to one of a few well-known "muscle magazines" and read several issues from cover to cover. Then you joined a "Y" and began to discreetly observe what was going in the weight room, trying to