Write a question about the following article.

Just make a solid schedule for myself and stick to it . When I was going to bed at the same time every night , and managing my time and food schedule ... I just felt better .

Question:
Why does the narrator recommend keeping your bed time stable ?
Options are:
* It helped for their night job .;
* It helped for curing hangovers .;
* None of the above choices .;
* It improved their sleep .;