One of the most common yet underestimated factors shaping modern sleep is how we engage with social media before bed.

It is no secret that use of smartphones and computers by teens at night is taking away time they could be sleeping. Devices suppress melatonin, making it harder to go to sleep.

Use only a soft, lint-free cloth, like microfiber, to wipe away smudges. Abrasive materials, such as rough cloths, towels and paper towels, could scratch the glass and damage the oil-repelling coating ...

Research suggests that how often people check social media − and how emotionally engaged they are with it − can influence sleep even more than how much time they spend online.