ATLANTA, Sept. 27 (UPI) -- About 70 percent of U.S. high school students don't get enough sleep on school nights and this is linked to health-risk behaviors, researchers say.
Scientists at the Centers for Disease Control and Prevention, who conducted the study, said insufficient sleep is associated with a variety of health-risk behaviors, including: physical inactivity, drinking alcohol, smoking cigarettes, drinking soda, fighting, being sexually active, marijuana use and seriously considering attempting suicide.