Please choose the correct ending to complete the given sentence: Health: [header] How to clear your mind before bed [title] Go to bed and wake up at the same time each day. [step] Your body craves routine, and will adapt to a regular sleep/wake cycle. If your schedule allows, try to go to bed and wake up at roughly the same time each day.

Ending1: Set your alarm the night before, and get comfortable in the new sleeping environment. [substeps] Try to engage both positive and negative energy: negative energy has been known to release stress and anxiety, but positive energy starts your day on a healthy, positive note. Ending2: This way you'll be on schedule throughout the day. [substeps] For instance, instead of crashing at about eight am, let your alarm go off at 10:00 am. Ending3: You should also make sure your cell phone or tablet does not disturb or disrupt your sleep cycle. [substeps] Set aside at least half of your day for physical activity. Ending4: [substeps] If you go to bed at the same time each night, your body will begin to slow down naturally during the hour leading up to bed time. You will feel sleepy naturally, and your this will help clear your thoughts and prepare you for rest.

Answer format: ending1/ending2/ending3/ending4