Is Your Cell Phone Keeping You Awake at Night?

You may think that you can’t live without your cell phone. But maybe you’d sleep better without it.A study from Sweden in 2008 involved 21 healthy subjects between the ages of 14 and 20. They were divided into two groups.A control group used their cell phones for no more than five calls or text messages per day. The other group used their phones for more than 15 calls or text messages per day.