Your smartphone
Your smartphone is probably the thing you use most frequently in a day, but when it comes time to go to bed, it’s better to leave it outside your bedroom. According to several studies, smartphone use before bed can have a negative effect on your sleep. It could take you longer to fall asleep, you may have a less restorative sleep, and you might develop insomnia. The culprit is the blue light emitted by the screen which can influence your biological clock.