Problem: Article: Tear gas is actually a dust that is sprayed into the air, whereas biological weapons are generally gases. While it is incredibly difficult and expensive to completely protect yourself against gases, you can easily create a barrier against particles at home. Toxic ash from volcanoes, tear gas, and dust are all particle contaminates. Using a razor blade, cut the bottom inch off of a large bottle and discard the bottom. Use a marker to draw a "U" across the front of the bottle, cap side down. This needs to fit snuggly across your face, stopping roughly at your temple and below your chin. Make sure you leave 5-6 inches between the bottom of your cup and your chin. Cut along your outline with your razor blade. Start smaller than you think you need you can always cut more away later. The bottle should fit snuggly across your face, as this prevent gas from getting into your eyes. Glue 1 inch of rubber form insulation around the edges of your gas mask to create a seal. This will keep contaminated air away from your eyes and nose. Take your time with this step, trying on your mask multiple times to make sure it sits snugly across your face. You can purchase rubber foam online or at large hardware stores. If you can't get your hands on rubber foam, use several layers of tape around the edges, or strips of fabric from an old t-shirt. Cut them near the bottom, as you will need them later to attach the mask to your face. Attach the elastic bands near eye level so you can securely keep the mask on your face without your hands. This is your filtration device. Place the hospital mask, preferably an N95 particulate mask (available online or at a nearby health supply store), at the bottom of your gas mask. Seal the edge of the mask to the bottle with glue to prevent air from bypassing the mask. Attach it to your face, making sure there are no holes in the insulation that would allow contaminated air to your face. Make sure the bottle cap is off, and breath in the clean air.
Summary: Know the difference between gas and particle contamination. Cut the bottom off of a transparent 2-liter soda bottle. Cut a U-shaped opening for your head. Create a protective seal around your face with rubber foam. Remove the elastic bands from your hospital mask. Staple the elastic bands to your mask. Push the hospital mask into the bottom to the bottle. Wear your new gas mask.

INPUT ARTICLE: Article: When selecting a caulk for your shower, use one labeled "Tub and Tile" or "Kitchen and Bath," as these are chemically formulated to resist mildew and to stick to smooth surfaces like your shower. In particular, there are 2 types of caulk usually used for showers: Silicone: This is a very flexible, tough, and waterproof caulk. On the downside, it can also be difficult to smooth and may require the use of mineral spirits to clean up. The color range can also be fairly limited. Acrylic latex: This caulk is easier to apply, clean up, and smooth out. It also comes in a wider range of colors. However, it dries harder and shrinks more than silicone caulk does, so acrylic latex caulk will probably have a shorter lifespan. Cheaper guns tend to be less predictable and may lead to sloppier application. A professional-grade gun applies more consistent pressure. A cradle caulk gun will produce the best, most even pressure and is a better long-term investment than a frame caulk gun. If using the latter, though, get one that is labeled as being "dripless." A professional level caulk gun typically does not cost a lot. Power caulk guns can be very pricey, but all you need is a professional hand-powered caulking gun, which might fit into your budget better. Trim it near the tip, cutting it off at a 45 degree angle. The hole should be smaller than the joints you are sealing. As a general rule, the hole of the tube should actually be 2/3 the size of the joint you are filling. The measurement for most showers should be about 316 inch (0.48cm). Use a utility knife with a fresh blade or a 1-inch (2.5-cm) wide, razor-sharp chisel to cut the tip off the nozzle. Some tubes of caulk will even have a line on the nozzle to indicate the point at which you should cut. Smooth out the edges of the tip after cutting it off, if necessary. If a piece of plastic remains hanging on the nozzle after being cut, pare it down with your utility knife or a piece of sand paper. Otherwise, this little burr can prevent the bead from being smooth. Push a nail or small dowel down inside the tip of the caulk to puncture the seal. The seal is at the back end of the tip where it meets the tube. This releases the caulk into the tip and allows you to apply it. If a nail does not prove long enough, use a thin, stiff wire, such as electrical wire or a coat hanger. How you insert the tube depends on what type of gun you have. In most cases, you will start by pulling the plunger of the gun out to its fully extended position. Then put the tube in the chamber of the gun and push the plunger down into the core of the tube until it stops. In some cases, once the plunger is in place it will put enough pressure on the tube that caulk will start coming out of the tip right away. Just be prepared for this and catch any caulk coming out with a moist rag. After placing your caulk tube in the caulk gun, give the handle a slight squeeze to begin the flow of the caulk. Release the pressure off the handle once you see the caulk at the tip and clean off any excess with a moist rag. This brings the caulk right up to the tip of the caulk tube, so it will be ready when you bring it up to the shower joint.

SUMMARY: Pick a caulk that is made for use in showers. Pick out a professional-grade caulk gun. Trim the nozzle of the caulk container. Puncture the inner seal in the caulk tube. Load the tube into the caulk gun. Give the handle a little squeeze.

In one sentence, describe what the following article is about: It's recommended to do about 150 minutes or 2 1/2 hours of moderate-intensity physical activity each week. Studies have shown that regular physical activity can help support weight loss and long-term weight maintenance. Aerobic activities can include exercises like: walking, jogging, swimming, biking or hiking. Exercise is a great support to weight loss, but it is only part of the weight loss picture. Exercise alone will not always cause weight loss. The best combination is to do aerobic exercise along with a calorie-controlled diet for the best results. Weight lifting or resistance training is another important part of your exercise routine. Try to include about 1-2 days of strength training each week for the best weight loss benefit. Strength training includes activities like: weight lifting, Pilates or isometric exercises like push-ups or crunches. Avoid doing strength training every day. It's important to allow your muscles to rest and recover after each strength training session. Making a consult with a personal trainer is a great idea to help you get started with an exercise routine. These fitness professionals will be able to show you how to use a variety of gym equipment, design a workout plan for you and may help you stay motivated. Check with some local gyms to see if they are offering any discounts or specials on personal training sessions. Many times they'll offer a free session if you sign up for the gym membership. Although multiple personal training sessions can be expensive, you may only need a few so you can learn the ropes of the gym and an appropriate workout for you.
Summary:
Do cardiovascular exercises weekly. Perform strength training weekly. Meet with a personal trainer.