The myths include: Memory Loss Is InevitableSlow Metabolism Makes You FatterCan Heartburn Lead to Cancer?Men Can Drink More Alcohol Than WomenMarijuana Gives You the MunchiesA High SPF Will Fully Protect You from Skin CancerNothing Will Age You Faster Than the SunSuperfit = SuperhealthyCholesterol Is the Major Cause of Heart DiseaseThere's a Wrong Way to BreatheOf course, the first myth interested me the most, and here is an excerpt:"Just like you challenge a muscle to grow it, well, the brain gets new connections," said Dr. Roizen.And that busts another big brain myth -- that you can't teach an old dog new tricks.... Exercise it.Try learning to play a musical instrument, doing crossword puzzles, learning a language -- even playing computer games."The data now indicate that an hour of games for 40 weeks can make your brain equivalent, your brain's real age, 10 years younger," Roizen said.And one final brain myth: Does the size of a person's brain have anything to do with their intellectual capacity?"There is no correlation with the size of a human brain and its intellect.