healthy sleeping habits

Researchers at the University of Antwerpen found that smartphones, tablets and laptops disturb our quality of sleep when we use them just before sleeping. Our brain needs to process the information-stimuli as well as the evoked emotions (positive or negative). Besides, the radiating light of these devices will inhibit the creation of the sleeping hormone melatonin.
Watching tv is slightly better because the screen is further away. But even more relaxing and healthy for the quality of our sleep would be to read a book, or....to watch a starry sky!