Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
Shincho Bunko / My concentration doesn't last long. I don't spend much time. I always don't get enough sleep. Maybe it's because of my smartphone. What happens to my brain when I use my smartphone? It's more efficient if I put my smartphone in the next room while I'm studying. When I remember something, I read it on paper instead of a tablet. Sleep fixes my memory. Too much use of SNS lowers my happiness? This is a book to help you get along with your smartphone.