With items like iPods, Nintendo Wii’s and flatscreen televisions on many teens’ holiday wish lists, sleep experts warn parents to think twice about putting these gifts under the tree: Studies suggest that the more gadgets teens have in their bedrooms, the less sleep they get. A National Sleep Foundation (NSF) poll found that 97 percent of adolescents claimed to have one electronic item in their room,  and on average, sixth graders had two while high school seniors said they have four items.  

Researchers believe that teens are getting “junk” sleep because the items’ constant ringing, noises and lighted screens disrupt children’s sleep rhythms and can keep them up all night.  Tip: Parents, make sure your child is getting the recommended nine hours of sleep a night. And if your teen must have a new Blackberry, suggest that it is turned off at night or left in a different room.