In one sentence, describe what the following article is about: Diaphragm breathing has been helpful for some when it comes to easing back pain. It's fairly easy to do and could be a simple way to reduce your pain.  You can engage in diaphragm breathing either sitting or lying down. Place one hand on your chest and another on your lower belly.  To inhale, breathe through your nose. Channel air in such a way that it moves into your stomach. The hand on your belly should rise. Hold for about 3 seconds.  Exhale through your mouth. Breathe out until the hand on your stomach is back in its original position. Repeat for 10 to 15 breaths. Visualization is a relaxation technique that may help alleviate back pain for some. You use your imagination to focus on picturing a calm, relaxing scene. Try to use as many sensations as possible. What does this scene look like, smell like, feel like? What kind of sounds are present? You can engage in relaxation during back pain flare ups throughout the day and before bed at night. It can help to close your eyes and strive to really put yourself in a specific scene or moment. Try as best you can to experience the sensation of existing in a relaxing setting. Sometimes, a simple distraction can help you disengage from back pain. Find something relaxing you enjoy and distract yourself with it when experiencing back pain. Listen to music. Watch a movie. Take a warm bath. Do a crossword puzzle. Any activity that is personally enjoyable for you can help alleviate your back pain by distracting you from the sensation. There are a variety of stretches you can do that will alleviate your back pain by relaxing your muscles. These can be particularly helpful for lower back pain.  Try the pelvic tilt. Lie on your back with your knees bent and the small of your back touching the floor. Tighten your abdominal muscles so your back is flat against the floor, hold for five seconds, and then release. Repeat 3 times. Gradually build up to 10 repetitions.  Engage in a knees-to-chest exercise. Lie on your back with your legs bent straight. Bring one knee to your chest and hold for 5 seconds. Repeat 5 times and then repeat with the other leg.  To do a back stretch, lie on your stomach. Push your upper body off the floor with your arms. Hold for 5 seconds and then repeat 10 times.
Summary: Try diaphragm breathing. Visualize. Seek distractions. Stretch for relaxation.

Problem: Article: A little forethought can go a long way towards keeping your fish healthy and your aquarium fun to maintain. Do a little research on what kind of fish you want, (described in further detail later in this article) and then select a tank that will accommodate them. The tank you choose needs to be large enough to hold enough water for the type and number of fish you plan to have. Different fish need different amounts of room and produce different amounts of waste. In general, the larger the fish are, the more waste they make and the more water is needed. Keep in mind that live plants and other decorations will also take up space.  There exist various calculators to help you decide what fish are safe to keep based on tank size, compatibility, and needs. The one-inch per gallon rule you may have heard is a rule of thumb that scales quite poorly to smaller or larger tanks. You would never keep two five-inch fish in a 10 gallon (37.9 L) aquarium! A 55 gallon (208.2 L) tank is a standard size that will allow you to have a variety of fish. As a beginner, you probably don't want to go larger than this just yet. You could also go with a 20 or 25 gallon (75.7 or 94.6 L) tank for a starter tank and keep just a few hardy fish (Mollies, guppies, platys, tetra, small cory cats and no cichlids) to see if you like the hobby. It is not recommended to start out with anything less than 10 gallons (37.9 L) - meaning no "Desktop" aquariums or the small, single Betta holders. As tempting as it is, it is actually harder to maintain good water quality in a small tank. Aquariums that hold 20 gallons (75.7 L) or more will need a stand no matter what. The only exception is if they are on a heavy, well-anchored counter. Buy one that is designed for the dimensions and shape of your tank. Don't underestimate the weight of a full fish tank! Make sure the stand is either rated for the size of your tank or that it has been custom built to be very sturdy. It is vital to the integrity of the tank it will hold that it be sturdy enough to hold the tank's weight. In addition, it is not safe to have an edge of the tank sticking out over the side.  Furniture like dressers, TV stands, end tables/buffets, or flimsy wooden desks aren't strong enough. Look for complete tank kits at those big box pet stores. Used setups from websites like Craigslist are often available for great prices, but be sure to check for leaks and clean very well before use. If you don't buy a complete setup, make sure the equipment you choose is rated for the size of your tank. Choosing the right spot is important for the health of your fish. You'll want to put it in a place where the temperature remains pretty consistent and the amount of light doesn't get overpowering. Allow at least 5 inches (12.7 cm) between the wall and the aquarium to make room for the filter. Some things to keep in mind when choosing location for your tank:  Too much sunlight will cause excessive algae growth and a maintenance nightmare.  An interior wall, away from bright light, is best. Try to stay away from putting the tank under a vent - dust will blow out and drop into the fish tank. It will also be harder to maintain a consistent water temperature, something that is important for all fish but vital for some. It is also important to consider the ability of the floor to support the weight of the fully loaded aquarium.  Make sure that there is adequate structural support under the floor. If necessary find your home's blueprints and look for crossbeams. Choose a location near an outlet, and keep in mind how far you will have to haul water for weekly tank maintenance! No cords should be straining to get to the outlet either. In fact, it's a good idea all around to get a surge protector power strip (which you'll love when the power snaps back on after an outage) and go from there. Set up your tank stand ideally on a wooden floor, not a rug or carpet.
Summary:
Choose a fish tank. Get an aquarium stand. Decide where to put the aquarium and stand.