7 medical myths. :)

actually there is 7 medical myths on yahoo. but i guess for most of us these 5 are a "must know". cool eh. but you can always click on the link to get the full story. yeah.

clipped from news.yahoo.com Myth: We use only 10 percent of our brains. viewing individual neurons or cells reveals no inactive areas Metabolic studies of how brain cells process chemicals show no nonfunctioning areas. Myth: You should drink at least eight glasses of water a day. no medical evidence suggest you need that much water "fluid" turned to water fruits and vegetables, plus coffee and other liquids, count. Myth: Fingernails and hair grow after death. As the body’s skin is drying out, soft tissue, especially skin, is retracting, nails appear much more prominent as the skin dries out skin is shrinking back, the hair looks more prominent or sticks up a bit. Myth: Shaved hair grows back faster, coarser and darker. When hair first shaved, grows with blunt edge on top Over time, seem thicker than it actually is. darker too because hasn't been bleached by the sun. Myth: Reading in dim light ruins your eyesight. can cause eye strain and temporarily decreased acuity, which subsides after rest