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Wash your hands for 30 seconds with warm water throughout the day. Wash well after using the bathroom, shaking hands, and touching door knobs and other commonly handled surfaces. Always wash well before handling or preparing food. Avoid touching or cleaning things like litter boxes, bird cages, and fish tanks. It's important that you stay clean to avoid infection, so make sure that you regularly bathe and wash up if you get dirty. Depending on your day, you may need to wash yourself more than once. After your bath or shower, put on clean clothes. You may want to wear your favorite pair of pajamas or sweats all of the time, but these can become soiled. Cat litter is teeming with bacteria, as well as the parasite toxoplasma. Toxoplasma can cause an infection in those with a low white blood cell count, further weakening your immune system. If you have a cat, ask someone else to clean its litter box. Say, "I know it's unpleasant, but could you please clean the cat's litter box? I can't risk an infection." Soil, standing water, and dirty animals both harbor germs and bacteria, which can set back your recovery. If you are receiving get well plants or flower arrangements, ask someone else to change out the water or tend to them. If you have a pet, take care when you interact with it. Have it groomed if it goes outside, and wash up after petting it. Don't do any gardening or activities that involve you coming in contact with dirt or soil. Hot tubs are home to a lot of bacteria, but the big concern is that the heat and bubbles from the hot tub combine to make the bacteria more dangerous. Bacteria can become part of the mist that forms over the hot water, making it easy to inhale the infectious agents. If you have low white blood cells, you can easily succumb to an infection from hot tub bacteria. Crowds are an invitation for germs. Stay away from shopping malls, theaters, restaurants, and anywhere that people congregate. When your white blood cells are low, you are more likely to contract an infection, which will further take a toll on your body. A low WBC count makes getting scrapes or cuts especially hazardous. With a weakened immune system, these can easily turn into major infections. Avoid dangerous activities and make small daily adjustments to avoid minor injuries. Take special care when brushing teeth to avoid bleeding gums. Ask someone to cut vegetables or meat for you when preparing food. Use an electric shaver instead of a razor to avoid cutting or nicking yourself while shaving. In the past, patients with low WBC counts were told to avoid raw fruits and vegetables, but this is no longer advised. However, you should carefully wash any fruits and veggies before eating, especially those that don't have a thick skin or peel. Oranges, bananas, and melons are examples of fruits that are peeled before eating. Use a clean veggie scrubber and cool running water to wash your produce. Even if a salad package is marked pre-washed, use a colander to rinse its contents under running water. Make sure your refrigerator temperature is below 40 degrees Fahrenheit (4.4 degrees Celsius). Don't let foods that should be refrigerated sit out for more than an hour. Avoid foods that are past their expiration date or appear slimy or moldy. Always thaw frozen meat in the refrigerator. Always avoid undercooked or raw eggs, meat, fish, and poultry. When cooking these items, use a thermometer to check for doneness. Cook red meat to 160 degrees Fahrenheit (71 degrees Celsius) and poultry to 180 degrees Fahrenheit (82 degrees Celsius). Cook eggs until both yolks and whites are solid and not runny at all. Consider using pasteurized egg whites, and make sure egg-containing products, like mayonnaise or eggnog, are pasteurized.

summary: Wash your hands thoroughly with antibacterial soap. Bathe daily and stay clean. Avoid cleaning the cat litter box. Avoid contact with plants and pets. Avoid hot tubs. Avoid crowds. Avoid cuts, scrapes, and other injuries. Wash fruits and vegetables well before eating them. Use safe refrigeration practices. Use thermometers when cooking.

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If you really want to dive into classical physics, buy a beginner's textbook and start reading. Simply reading the concepts will not be enough to really understand. You must also review the sample problems and try your hand at some of the questions at the end of each chapter. Take the time to process the derivations of the basic equations of motion and truly understand why they work before you move onto the next concept. Reading a textbook on your own might not be enough for you to gain the depth of knowledge you'd like in physics. There are many open courseware and online courses you can take related to physics. Many of these courses have assignments to check your understanding and forums to discuss the work. These types of courses are also easy to fit into your schedule as you can work on the material when you have the time. Physics is a subject best learned through hands-on activities and solving practice problems. Do some basic experimenting and see if you can derive the equations based on your data. Answer all of the questions at the end of each chapter and check your solutions. Seek out more problem sets online for concepts that are more troublesome than others. Physics builds upon itself, so continue to do practice problems until you feel that you have mastered the concept before moving on to the next one. If you work best in a classroom setting, check out the courses available at your local community college. Choose a course with a well-rated professor during a time that fits well into your schedule. Taking a course just because you're curious about the material can be really fun and you'll be more likely to focus on the work and truly learn the subject. Take advantage of office hours and open lab times to discuss concepts that may be causing you trouble.

summary: Read a beginner's physics textbook. Take an online physics course. Experiment and do practice problems to check your understanding. Sign up for a basic physics class at a local college.

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Using a saber or keyhole saw, cut out the bottom of the bucket. Use 40 to 60-grit sandpaper to sand the edges until they are smooth. By removing the bottom of the bucket, it will be easier to lift the bucket off of the sand. If you do not want to remove the bottom yourself, then ask the hardware store if they can do it for you. Alternatively, use a regular bucket without the bottom removed if you do not have a 1 gallon (3.8l) bucket. You can purchase 1 gallon (3.8l) buckets, saws, and sandpaper from your local hardware store. Fill a third of the bucket with sand. Add an equal amount of water to the sand. Pack the sand down with your hands. Repeat this process until the bucket is full of compact sand. Remove the bucket. Once the sand feels solid enough and does not give under pressure, it is compact. Ask you create the layers of sand, place the bucketfuls of sand close together. Fill in gaps between the bucketfuls of sand with more sand and water. Pack the sand with your hands until the base feels solid. Keep adding layers of sand until you have reached your desired height. Once you have reached your desired height, use a sand wedge hoe or a plastic knife to smooth the surface of the sand flat. Large sandcastles are typically 5 by 5 feet (1.5 by 1.5m) or bigger. If you plan to build a sandcastle taller than you, then bring a step ladder to the beach so you can reach the top.
summary: Remove the bottom of a 1 gallon (3.8l) bucket. Build layers by placing the bucket upside down on the base. Cover the entire base with a layer of compact sand. Add a second layer to create more height.