In one sentence, describe what the following article is about: Nonsteroidal anti-inflammatory drugs and analgesics reduce migraine pain by reducing blood vessel inflammation.  Nonsteroidal anti-inflammatory drugs include Naproxen and Ibuprofen. Analgesics include Aspirin and Acetaminophen. For this treatment to be most effective, you should take the painkiller within 30 minutes of your first migraine symptoms. It should still work even if you wait longer than that, but the migraine may last a bit longer. Avoid taking these drugs more than twice a week. Doing so can cause you to undergo rebound migraines once the medication wears off. Some non-prescription drugs combine simple analgesics with a low dose of caffeine. The caffeine narrows your blood vessels and makes these pain relievers more effective.  These drugs, such as Excedrin migraine, usually combine acetaminophen or aspirin with caffeine. Studies suggest that these drugs can work up to 20 minutes faster than drugs with no caffeine. As with other over-the-counter pain killers, you should take the drug within 30 minutes of your first symptoms and avoid taking the drug more than twice a week. These drugs work by constricting your blood vessels, thereby limiting the rush of blood to your head. Studies and trials suggest that many migraine sufferers experience significant relief within one hour of taking the drug, with complete relief coming in as little as two hours.  Avoid taking triptans more than 17 times per month. Doing so can cause you to experience rebound migraines since your body will become accustomed to existing on the drug. These medications can cause heart attack and/or stroke by constriction of the blood vessels. If you have heart-related problems or clotting abnormalities you should not use triptans. Triptans are clinically proven to be the number one most effective treatment for migraines. These prescription drugs also constrict the blood vessels in your brain. In addition to soothing the pain, they are also known to reduce the nausea and light sensitivity commonly associated with migraines.  These drugs are usually administered as nasal sprays or injections. An injection might be given for a one-time treatment, but if you frequently experience migraines, your doctor may prescribe a nasal spray version.
Summary: Take an over-the-counter pain reliever. Try an over-the-counter pain reliever with caffeine. Get a prescription for triptans. Ask your doctor about dihydroergotamine or ergotamines.

Position the cap over the flue, centering it as well as you can, before sliding it in place over or inside the flue. Remember that a single flue chimney with an extended flue will require a cap that slides over the top of the flue. A chimney without an extended flue will require a cap that slides inside the flue, instead. Place a sheet metal screw in each hole along the base of the cap and twist each one in place using a drill.  Match the screw size to the size of the holes in your chimney cap. Similarly, use the correct drill bit size for that screw. Work carefully as you drill the screw in place. You will be drilling into the foundation of the chimney, and if you work too sloppily, you could end up damaging the masonry. If you are not comfortable drilling into the chimney, use pressure screws or bolts instead of sheet metal screws. Note that you will only fasten the cap from the outside when capping an extended flue. If capping a flush flue, you will need to fasten the cap to the inside of the chimney flue. Apply a thin line of silicone caulk to the entire perimeter of the chimney cap, filling in the seam. This caulk will help keep more moisture out.
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One-sentence summary -- Align the cap with the flue. Fasten the cap to the foundation. Apply silicone caulk.

Problem: Article: An average sleep cycle lasts from 90 to 110 minutes, in a flux from light sleep to deep sleep. Consider the stages:  Stage 1 is the first and shallowest stage of sleep – it lasts anywhere from 5 to 10 minutes. Your eyes are closed, but it's easy to wake you up. You probably won't feel terribly refreshed if you nap for five minutes, but you shouldn't feel too groggy, either. Stage 2 is a slightly deeper stage of shallow sleep. Your heart rate slows, your body temperature drops, and you begin to sleep into deep sleep. This may last 5-10 minutes. Stage 3 is the "deep sleep" stage. If you're awoken during deep sleep, you will feel groggy and disoriented for a few minutes. Set an alarm for about 25 minutes from now: 20 minutes to sleep, and 5 minutes to fall asleep. A short "power nap" ends before your brain sleeps into deep or slow-wave sleep; you will wake feeling rejuvenated, and you shouldn't feel groggy. If you nap for longer than 20 minutes, you may slip into a deeper sleep phase – and if so, you may find yourself groggier if you wake before the end of the full sleep cycle. The 20-minute power nap, sometimes called the stage 2 nap, is good for alertness and motor learning skills – things like typing and playing the piano. Research shows that longer naps help boost memory and enhance creativity. When you nap for 30-60 minutes, you slip into slow-wave sleep, which is the deep phase that comes between REM "dream" sleep. A 30-60 minute nap is good for decision-making skills – e.g. memorizing vocabulary or recalling directions. Be aware that you may wake up groggier, at first, if you are awoken during the deepest part of the sleep cycle. REM (rapid eye movement) sleep is the final phase of the sleep cycle; it is when dreams happen, and it is when your brain restores itself. REM sleep plays a key role in making new connections in the brain and solving creative problems. The purpose of a nap is to rejuvenate your body, so it's important that you give yourself plenty of time. Set an alarm to make sure that you stick to your desired naptime. If you want to get very precise, add several minutes to your "nap time" to allow yourself plenty of time to fall asleep.
Summary:
Plan your nap to minimize grogginess. Nap for 20 minutes at a time for a quick "power nap". Nap for 30-60 minutes to slip into slow-wave sleep. Nap for 60-90 minutes to reap the benefits of REM sleep. Try not to oversleep.