A new study has revealed that people who read e-books from laptops and mobile phones before going to bed experience a harder time falling asleep. The new research is co-authored by Anne-Marie Chang claims. Chang is a Penn State bio-behavioral health professor.
The study was carried out at Boston's Brigham and Women's Hospital and 12 grown-ups were recruited for two weeks. During the study, researchers monitored the brain waves and heart rate. They also took blood samples of the participants.