As soon as I could walk and hold a racket, I played tennis. It's the ultimate in competition--a true battle of skill, endurance, hustle, acuity and last but certainly not least, mental toughness. An intense one-on-one fight, you leave it all out on the court, or you lose and go home. My favorite player, the ultimate fighter both on and off the ...

Last week, Larry King hosted three prominent neurosurgeons on his show who stressed the importance of keeping cell phones as far from the brain as possible. Whether or not cellular phones are hazardous to one's health--linking increased usage with increased brain tumor incidence--has been an ongoing debate. Recently, the news of Sen. Kennedy's ...