Problem: Article: Take the bed sheet off the mattress first, then rinse the stain out using cold water. Do not use hot water, as this will set the stain. Follow this step with any of the stain-removal treatments listed below. Pour hydrogen peroxide directly onto the blood stain. Wait 20 to 25 minutes, then lightly pat the residue with a paper towel. If you don't have any hydrogen peroxide at home, you can use club soda instead. White vinegar will also work in a pinch. Light can turn hydrogen peroxide into water. If it is very bright in your room, cover the treated area with plastic wrap, then drape a dark towel over it. The towel will hide the area from light, and the plastic wrap will prevent the towel from soaking up the hydrogen peroxide. Simply spray the window cleaner onto the stain. Wait 15 minutes, then rinse it out from behind using cold water. Fill a spray bottle with 1 tablespoon of ammonia and 1 cup (240 milliliters) of cold water. Close the bottle and shake it to mix. Spray the mixture onto the stain and wait 30 to 60 minutes. Blot up any residue with a clean cloth, then wash the sheets in cold water. Be careful with colored sheets. Ammonia may fade or bleach colored fabrics. Mix one part baking soda with two parts water to form a paste. Dampen the stain with water, then rub the paste onto the stain. Let the fabric dry, ideally in the sun. Brush off any residue, and then wash in cold water. Talcum powder or cornstarch/cornflour will also work. Mix 2 tablespoons of salt and 1 tablespoon of dish soap. Dampen the stain with cold water first, then soak it with the soap mixture. Wait 15 to 30 minutes, then rinse the stain out using cold water. You can also use shampoo instead of dish soap. Fill a spray bottle with 1 part baking soda, 1 part hydrogen peroxide, and part cold water. Close the bottle, and shake it to mix. Spray the mixture onto the stain, wait 5 minutes, then rinse it off. Repeat 2 more times, then wash the sheets in cold water. This works best on polyester-cotton blends. Use cold water, a mild detergent, and your usual wash cycle. Remove the wet sheets as soon as the cycle ends. Do not place them in the dryer. Instead, let them air dry either by hanging or in the sun. Treat the blood stains again if they do not come out after the first wash cycle. You will need to continue treating and washing until the blood is no longer visible. Once you get the blood out, you can dry the sheets as you normally would. Consider using bleach on white sheets.
Summary: Rinse the stain out from behind using cold water as soon as possible. Treat heavy stains with hydrogen peroxide. Try an ammonia-based window cleaner. Use diluted ammonia for heavy stains. Make and use a baking soda paste. Consider using salt and dish soap as a pre-laundry treatment. Make your own stain remover using baking soda, hydrogen peroxide, and water. Launder your bed sheets in cold water after any stain-removal treatment.

Problem: Article: You need to understand the sport you're photographing to know when you'll get the best shots. Become familiar with the rules, the timing, and the players themselves. This will help you develop judgment about which shots are worth keeping. Don't take a few shots and then look down at the LCD to review them you might miss another opportunity for a good shot. You also risk getting injured if you're close to the action. Review your shots later during timeouts or halftime. You don't want your photos to look like everyone else's. To make yours stand out, try getting down on the ground and shooting the players from there, or going to a different side of the field from everyone else. They might have the best vantage point from where they are, but you could catch a great moment from an angle that no one else will have. Take a few test shots at a shutter speed of 1/500 of a second. If the photos still look blurry, increase the speed. You can go as high as 1/1000 of a second to properly capture sports like motor racing. You may need to open your aperture as wide as it will go or increase your camera's ISO (its sensitivity to light) to reach these high shutter speeds. If you're shooting a basketball or volleyball game, you'll likely be under fluorescent lighting, which can give your shots a yellow or green tint. Change your light balance to Fluorescent or Tungsten/Incandescent to improve the color.
Summary: Learn the rules of the game. Keep your eyes on the action. Try different angles. Increase your shutter speed. Adjust your white balance for indoor sports.

Problem: Article: People often do not want to worry their loved ones, but it is imperative that they know what is going on if you suspect that you are having a heart attack. The situation could worsen to the point that you are unable to respond effectively. Inform them at the first signs of a heart attack so they can begin caring for you. If you are not around friends or family, try to inform anyone else who is around of your condition. It is important that someone knows what is happening to you. Aspirin is a blood thinner and can help in case of a heart attack. You should chew it, instead of swallowing it, because chewing it will cause it to reach your bloodstream more rapidly. Do not substitute the Aspirin for another painkiller. A standard dose of approximately 325 mg should be sufficient. Evidence suggests that coated, enteric aspirin, which allows for slow absorption of the drug, is still beneficial to those suffering from a heart attack. There is reason to suspect, however, that un-coated aspirin are probably more effective. Do not take aspirin if you are allergic to it, have stomach ulcers, recent bleeding or surgery, or another reason for which your doctor has told you not to take aspirin. Other painkillers like Ibuprofen, opioids, and Acetaminophen do not share the same properties and should not be administered in case of a heart attack. . To increase your chances of survival, call 911 within 5 minutes of when you first develop symptoms. Three minutes of even light chest pain is a good indication that what you are experiencing is, in fact, a heart attack and that you should seek emergency medical attention. If you are also experiencing shortness of breath, numbness, or severe pain, call immediately. The sooner you call the better. If you are behind the wheel, get off the road. You could lose consciousness and endanger the lives of others. If there are other people around you, do not ask them to drive you to the hospital. It is best to be taken by the EMTs. Response teams can get you to the hospital more rapidly than your family. They also have equipment in the ambulance that will allow them to treat you before you make it to the hospital. The only instance when you should drive to the hospital is when you are unable to reach emergency support through 911. If you have been prescribed nitroglycerin, take it when you feel symptoms of a heart attack. It will open up blood vessels and reduce chest pain. Anxiety will increase the amount of oxygen that your heart demands. This will make it more likely that you will experience severe complications. Lie down and try to rest. Take full, deep breaths to improve oxygen flow and calm yourself down. Do not take short, quick breaths or hyperventilate. Breathe in slowly and comfortably. Remind yourself that help is on the way. Repeat soothing phrases like "Help is on the way," or, "Everything will be alright" in your head. Loosen tight or restrictive clothing. CPR is imperative if you lose your pulse. Ask around for someone who is willing to perform CPR. If no one knows it, find someone who is willing to be coached on by the 911 operator. If the person giving you CPR does not know proper form, it is generally best that they refrain from giving mouth to mouth. They should stick to chest compressions, pushing down on your chest at a rate of about 100 compressions per minute. There is no evidence that self-administered CPR during a heart attack is effective. By the point that CPR is imperative, you will already be unconscious.
Summary:
Alert others. Chew an Aspirin. Call 911 Refrain from driving. Take nitroglycerin. Lie down and relax. Ask someone to perform CPR.