Please choose the correct ending to complete the given sentence: Health: [header] How to take a really great nap [title] Plan a nap into your day. [step] Planning ahead for a time in your day when your body can catch up on zzz's will help your body prepare for sleep when it comes. Additionally, just knowing a nap is coming is enough to lower your blood pressure.

Ending1: [substeps] If possible, plan to have a nap every day. Having a regularly scheduled nap will help your body adjust to the routine and make it easier to fall asleep. Ending2: [title] After you have your nap schedule in mind, set aside a certain time to nap in. [step] You want a 15-20 minute nap to help your body relax for the day. Ending3: [substeps] You should nap for 15 to 30 minutes. If you take a nap during the day, you should be expected to get up 30 minutes earlier and rise 20 minutes later. Ending4: [substeps] You might develop a migraine headache. Although not caused by zzz's syndrome, migraine headaches are also known as buanamine headaches.

Answer format: ending1/ending2/ending3/ending4