It will stress arising from work and reading, thus making them insomnia because of concern with this childhood. sufficient sleep is a very important thing.
Stress is caused by the work and reading. Therefore, they can not sleep because of concerns with the task. In this age of adequate sleep is very important.
It is caused by the stress function and reading the book. Why they couldn't sleep because I worry about the job. In this age enough sleep is what สำคัญมาก.