Scientists studied the sleep habits of some 2,200 high school students and found that about 47 percent were getting less than the recommended eight hours of sleep each night.
Para ilmuwan mempelajari kebiasaan tidur sekitar 2.200 siswa SMU dan mendapati bahwa sekitar 47 persen memiliki waktu tidur kurang dari yang disarankan, yakni delapan jam setiap malam.