Based on the context and the answer, generate a question. 

Context: I am so tired , but I ca n't seem to tear myself away from the computer to go to sleep . All day I was dreaming of coming home and watching the last two episodes of Dr. Who . I know it 's a two - parter , so it will take about 2 1/2 hours to finish . Of course life does n't always go according to plan .

Answer:

They spend too much time on the computer .



What may be the reason for their sleeping problems ?