Read the following article and answer the question by choosing from the options.

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 .

Why does the narrator recommend keeping your bed time stable ?
pick from the following. 1. It helped for their night job .; 2. It helped for curing hangovers .; 3. None of the above choices .; 4. It improved their life .;...A:
4.