Sleep plays an important role in mood cognitive function.
Sleep loss, sleep restriction, and sleep disorders might have a negative effect on mood and cognitive functions.
Experts recommend that you should stop using electronic devices, like your cellphone, at least 30 minutes before bedtime.
Restricting mobile phone use before bedtime is effective in reducing sleep latency, increasing sleep duration, improving sleep quality, reducing pre-sleep arousal, and improving positive affect and working memory.