If your mouth breathing isn't a structural or mouth issue, then it's a habit. Breaking the habit is a matter of correcting the behavior when you notice you're doing it. Breath through your nose instead of your mouth whenever you notice that you're doing it. If you're having issues breathing through your nose because it's a habit, you can leave written reminders for yourself. Write "breathing" on sticky notes and place them on your computer or inside of books to remind yourself to use your nose to breathe. If your nose is stuffed from allergies or a cold, over-the-counter nasal sprays may be able to clear your nostrils and help your breath through your nose. Purchase the spray from a drugstore and read the directions before using it. Clear your nose first by blowing it, then carefully place the end of the nozzle into your nostril and press down on the applicator to spray the solution into your nose. Sheets and carpets can harbor pet dander and dust and can make allergies worse. Cleaning them once a week will prevent dust buildup and can make it easier to breathe through your nose. If you sleep with your pet, you should try to sleep without them to see if that clears up your nose. Upholstered furniture is more likely to trap dirt and dust. Use leather, wooden, or vinyl furniture instead. Breathe through your nose for 2-3 minutes straight, then close your mouth, inhale deeply, and pinch your nose with your fingers. When you can't hold your breath any longer, slowly start to exhale through your nose. Continue to do this several times until you clear your nose. Many exercises like running, biking, and yoga require good breathing technique. If you get trained by a professional, they will give you the techniques you need to breathe properly through your nose. Look for classes locally and talk to your trainer about your mouth breathing problem.
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One-sentence summary -- Breathe through your nose when you notice you're using your mouth. Use sticky notes to remind yourself to breathe through your nose. Use a nasal spray to clear up obstructed nostrils. Clean your sheets and carpets once a week. Perform nose clearing exercises. Participate in yoga or other exercises that concentrate on breathing.

These are the slots that you can install expansion cards into. PCI slots are typically white, and you may have 1-5 of them. The slots line up with the removable panels on the back of the case. If you're having difficulty identifying the PCI slots, check your motherboard's documentation. You can look this up online if you have the motherboard's model number. If you are replacing an old card, remove the old card first. Having two cards installed will lead to hardware conflicts. Remove the screw securing the card to your case and pull the card directly out of the slot. You may need to disconnect the sound card from your CD/DVD drive. Make sure that any speakers connected to the old sound card are disconnected before you remove the old card. Remove the corresponding dust guard panel from the back if you are installing the new card. Make sure that the notches in the slot line up with the card, and press the card straight down firmly. Don't force the card into the slot, and ensure that the ports on the back line up with the with the bay opening. Screw a single screw into the metal tab that secures the card to the computer chassis. Don't overtighten, but ensure the card is snugly fastened to the case. Some older sound cards may connect to the CD/DVD drive with a small cable. This is optional on virtually all newer computers, as this connection is now handled by the hardware. Return the side panel to the computer and secure it. Place the computer back at your desk and plug the cables back in.
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One-sentence summary -- Locate the PCI slots. Remove the existing sound card (if necessary). Insert the new card. Secure the card with a screw. Connect the sound card to the CD/DVD drive (optional). Close the case.

Green tea can decrease your body's ability to absorb iron. The catechins in the tea block some of the iron from being absorbed in your body. Know the risks. If you have anemia, drinking green tea can make it worse. Iron-deficiency anemia is caused by not having enough iron in the blood, which in turn lowers either the red blood cells or hemoglobin. Anemia can cause fatigue because not enough oxygen is being carried throughout your body. One cause of anemia is excessive menstrual bleeding. If you think you may be anemic, talk to your doctor about taking an iron supplement and eating iron-rich foods. Green tea can increase pressure in the eye for an hour or more. Know who's at risk. If you suffer from glaucoma, you can increase the risk of the disease. Glaucoma is an eye disease. It affects the optic nerve. It can impair your vision over time. Instead, drink your tea between meals to give your body a chance to absorb the iron. Eat foods rich in iron and vitamin C. Iron can help with anemia, while vitamin C increases your body's ability to take in iron. Iron-rich foods include meats, beans, and greens, to name a few. Foods rich in vitamin C are things like citrus fruits, kiwi, strawberries, broccoli, and peppers. Green tea increases the pressure in your eye within 30 minutes of drinking it, and the effects can last beyond an hour and a half of drinking the tea.
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One-sentence summary -- Understand the problem with iron. Know the problem with glaucoma. Avoid drinking green tea with meals if you have an iron deficiency. Avoid green tea altogether with glaucoma.

Furniture tends to move slightly across flooring with daily use. Pads will help prevent the bottom of your furniture or other sharp parts from scraping or scratching against your laminate flooring. You can purchase pads made out of several different types of materials, like felt, plastic, carpet, and cane. You can purchase protector pads from most home improvement and flooring stores. Purchase protector pads, or discs, with adhesive on one side that you can stick to the bottom of your furniture. Periodically examine the felt protector pads you attached. The pads may need to be replaced when the felt becomes compressed due to regular wear of the furniture. "Lanes" can often form in areas of laminate flooring that are often used. Rugs or carpets can be placed in areas with heavy foot traffic to avoid this problem. You can place rugs under furniture to prevent scratches and scrapes from marring the laminate flooring, too. Rugs can also be placed in areas that are likely to come into contact with water, like under the kitchen sink. Place rubber or non-slip pads beneath your rugs in heavy foot traffic areas to prevent them from sliding around. Dirt, pebbles, and sand from shoes can easily scratch laminate flooring. Putting mats at your doorways can prevent this from happening. This will allow you, your family, or other visitors to wipe their feet before entering your home. You can also place mat at other areas in the home that are at risk of being scratched by debris. You can enforce a rule that bans people from wearing shoes inside your home, which may help eliminate any debris that is tracked onto the laminate flooring from shoes. Chairs are probably the most often moved pieces of furniture in the home, especially those at kitchen tables and desks. Take the plastic casters off of the chairs and replace them with rubber wheels. This will prevent scratching and damage to the floor. Make sure to buy soft rubber wheels. You can buy this online from websites like castercity.com, and from many home improvement and office stores.
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One-sentence summary --
Attach protector pads to the bottom of furniture. Put carpets or rugs on your laminate flooring. Place entry welcome mats at doorways. Replace plastic casters with rubber wheels.