This statement is true. In order to have good sleep hygiene, you need to change and set healthy habits, like reserving your bed to only sleep or have a good nutrition. This way, your body and unconscious mind will related your bed with the action of sleeping. On the other hand, if you play games, watch movies, eat, all on your sleeping bed, then you are gonna have your body waiting for every kind of activities when you go to bed, having as a result not a brain resting mode.
Explanation: Because you can always go lay on another bed just don't do it on yours and then what u do is you go walk around the house and then you go watch tv and go play outside or something.
