Please choose the correct ending to complete the given sentence: Health: [header] How to stop insomnia [title] Follow a sleep schedule. [step] Going to bed at the same time each night and waking up at the same time each morning can help you get more restful sleep. Having a sleep schedule allows your body's internal clock to regulate itself, which can help you fall asleep and stay asleep with less effort.

Ending1: [substeps] At least 1 night of quality sleep a night has been shown to help your body regulate sleep cycles. Aim for 7-9 hours of sleep a night. Ending2: [substeps] If you sleep all the time, it can become harder to get a good night's sleep. Sometimes, a bad night's sleep can make you feel drained. Ending3: [substeps] If you stop or do something during the day, your internal clock will automatically reset. If it isn't working well, it could be time to reevaluate. Ending4: [substeps] Choose a bedtime that is realistic for your lifestyle. If you know you function best early in the morning, try getting up early and going to bed early.

Answer format: ending1/ending2/ending3/ending4