INPUT ARTICLE: Article: Polyurethane has a very strong odor and it can be overwhelming in a small space. Open as many windows and doors as possible to get proper ventilation. You can also wear a paper face mask to protect yourself from the fumes. Take the lid off of the polyurethane can and use a paint stir stick to mix the polyurethane. Don't shake the can to stir the polyurethane since it could form air bubble and leave an uneven finish on your floors. You can buy polyurethane sealer from your local hardware or home improvement stores. Use a lambswool stain applicator and a natural-bristle paintbrush to apply the polyurethane. Stick a piece of painter's tape on the stain applicator to remove any excess fibers so they don't get stuck in the sealant. Pull out any loose bristles from the paintbrush before using it. You can buy stain applicators from your local hardware store. Starting in the corner farthest from the door, use the brush to apply polyurethane near the wall. Dip the brush into the polyurethane can and gently brush a thin layer about 4 inches (10cm) into the room from the wall. After you paint a border around the room, use the lambswool applicator to spread the polyurethane. Work backward toward the door so you can easily get out when you're finished. Make sure you overlap each stroke slightly to get an even finish. Repeat the same process as before for your second coat. Start around the edges of your room and work toward the center. Make sure you get even coverage with the polyurethane so your floor is level. Let the polyurethane dry for 2-3 days before using the room.If the floor feels sticky or tacky, then let it dry for longer.

SUMMARY: Ventilate the room before you begin. Stir the polyurethane. Clean the applicators you're using for your polyurethane. Begin in the far corner of the room with the brush. Apply a second coat of the polyurethane and let it dry.

INPUT ARTICLE: Article: Stress fractures are fairly common injuries to the foot and ankle. They're especially common in athletes, because they often result from overuse and repetitive stresses, such as those that long-distance runners endure. Sudden increases in activity can also cause stress fractures. For example, if you're usually fairly sedentary but take a hiking holiday, you might end up with a stress fracture. Osteoporosis and certain other conditions that affect bone strength and density make you more prone to stress fractures. Trying to do too much too soon can cause stress fractures. For example, if you're new to exercise and start trying to run a 10k every week, you could end up with a stress fracture. If you feel pain in your foot or ankle that eases when you rest, you may have a stress fracture. If the pain gets worse during normal everyday activities, it's a good sign you have a stress fracture. The pain will also get worse over time. The pain may feel deep inside your foot, toe, or ankle. Pain isn't just weakness leaving your body. If you experience consistent foot pain, especially if it's even during everyday activities or persists when you rest, see your doctor. Ignoring it could lead to worse injury. If you have a stress fracture, you may notice that the top of your foot is swollen and tender to the touch. Swelling may also occur on the outside of the ankle. Sharp pain when you touch an area of your foot or ankle isn't normal. If you experience pain or tenderness when you touch your foot, see your doctor. Bruises don't always occur with stress fractures, but they can. You may be tempted to "tough it out" with the pain from a stress fracture, but don't. If you do not seek treatment for a stress fracture, it can get worse over time. The bone may even break completely.

SUMMARY:
Recognize your risk factors. Watch out for pain. Look for swelling and tenderness. Examine the area for bruising. See a doctor.