According to Dr. Johnathan Halevy from Family Medical Practice infirmary, half of preschool students and 40 percent of Vietnamese adolescents sleep less than a normal sleep of 8 hours.

Most Vietnamese kids sleep less than six hours a night, shorter than a normal sleep of 8-10 hours a day. Main reasons of lack of sleep attribute to surfing on social network, online game playing and learning pressure. Tiếp tục đọc “40 percent of Vietnamese kids lack sleep because of much studying” →