Spectators have watched athletes express emotions of victory since the advent of sport. What was once thought of as pure pride may now be viewed as an instinctual response to victory.

Every year, thousands of Americans come down with the flu. If you have a condition like rheumatoid arthritis, you may be more likely to get the flu.

Our cells are constantly changing, just like we are. These include mutations that occur over a lifetime, all of which are part of normal aging. Add in a few more mutations, though, and you've got cancer.

Post-traumatic stress disorder (PTSD) causes difficulty for thousands of trauma victims every year. Typically symptoms are treated as they arise, but new research may help nip PTSD in the bud.

A sense of self, or self-concept, comes from involvement in family, work and community. Dementia patients may have higher quality of life when self-concept is maintained.

As the Olympics begin tonight, think about the fact that the fastest man alive could outsprint a camel. But the camel could pace a man and go 10 miles per hour for 18 hours straight.

Is a Red Bull and vodka or a Jager Bomb one of your standard bar drinks for a night on the town? Then you may be more likely to wake up beside a one night stand the next morning.