In our mind, we assign each room a certain function. Our bedroom is for sleeping and recreation, our kitchen is for cooking and our study is - well - for studying and working. If we only have one room for everything, it will be hard for our brain to really relax, because we are still in the same room in which we use to work. But it will also be difficult for our brain to switch into full work mode, because it is also the same room we use to relax. For this reason, it is a good practice to leave your home and go to a public library.