Watching television for too long
You don’t use your brain when watching TV. However, your brain needs regular training. The more you train it, the smarter you’ll be. According to a report on a medical journal, if a kid watches TV for more than one hour a day, the risk of getting ADHD will increase by 10%. Another study shows that if adult watches TV for more than two hours a day, their risk of getting cognitive disorder will be largely increased.