Problem: Article: Make sure that you breathe continuously while exercising. If you hold your breath while exercising, you'll develop a cramp within a few minutes. As long as you provide enough oxygen for your body, then you'll prevent this type of cramp. If you develop a cramp in your side, you are not breathing deeply enough to provide oxygen to your diaphragm. When you inhale, fill your lungs all the way to the bottom. Think of it as drawing air into your stomach rather than your chest. Your lungs are deep! Take deep and complete breaths. Quick, shallow breaths do not fill your lungs all the way and can also cause you to become lightheaded. If you are having trouble taking deep breaths, slow down your pace for a few moments while your lungs catch up. Always provide your body with enough water, especially if you're sweating. When you sweat, you lose salt and water, which can throw off the balance of electrolytes and salt in your body. This causes your cells to swell, which causes calcium to stick to them, making the muscle contraction remain. You can prevent this by drinking enough water. Take regular water breaks, especially if you are doing a high-intensity workout. It is crucial to continue hydrating after you exercise. Don't overdo it, but keep a water bottle handy for a few hours after your workout. Take care not to drink too much water. Studies have shown that drinking water when you feel thirsty is a reliable way to hydrate your body sufficiently. There are a number of sports drinks available that claim to provide extra hydration. These won't hurt you, but keep in mind that most brands do contain extra calories that you may not have accounted for in your eating plan. Most importantly, sports drinks do not improve your performance or provide any more hydration than regular water. A thorough "cool-down," sometimes called a "warm-down," includes 10-20 minutes of less intense exercise, some more dynamic stretching, followed by some static stretching. Basically, you want to do your whole workout routine backwards, but at a lower level of intensity. This will greatly reduce the buildup of lactic acid in your muscles, a major culprit of post-workout soreness. Here are some basic static stretches: Posterior capsule stretch. Stand or sit up straight and stretch one arm across your torso, using your other arm to bring it close to your body. You should feel a stretch across the outside of your arm. Quadriceps stretch. Stand on one foot, reaching out behind you to hold your raised foot in your hand. Engage your abdominal muscles to keep your back straight. You should feel a stretch down the front of your thigh.
Summary: Take deep breaths. Drink water. Include a cool-down session after you exercise.

INPUT ARTICLE: Article: It's unlikely that a kickstand will be stable enough to keep your bike upright while removing rust from the chain. Instead, hang your bike on a rack or turn it upside down so it rests sturdily on the seat and handlebars. If you have a nice bike, you may want to lay a drop cloth in between your bike and the ground so you don't scratch its paint job. Bike racks are relatively easy to make from scrap parts. Make a stable frame equipped with hooks and hang your bike by its wheels. Hanging your bike in a rack or turning it upside down has the added bonus of making the chain more accessible as you work on it. Take a look at your chain up close. If you notice warping, imperfections in the metal, or similar deterioration, you and your bike will be better off with a new chain. Surface rust, buildup, and crustiness can all be removed so your chain runs like new. To ensure the longest life and best operation of bike chains, avid cyclists should clean their chain once a week or roughly once every 200 miles (321 km). Keeping your chain cleaned and lubed will help maintain the condition of your chain and drivetrain. It will also help you notice damaged links sooner. Replace bad links straightaway to prevent further damage. Many modern chains come equipped with a master link. This is a special link on the chain that makes it easier to remove. Look for links that have a special pin/slot connection, where the pin of one link fits snugly into a slot on the connecting link. Many kinds of single speed bike will not have a master link. If the link is not clearly visible, chances are your chain doesn't have one. If you happen to have a bike chain without a master link, consider having a local bike shop add one for you. This process usually only costs around $15 for most bikes. It's important that you reinsert your bike chain in the drivetrain correctly. To make reassembly easier on yourself, take a few pics from various angles of the chain, the gears, and the sprockets before removing the chain. Bikes with multiple gears often have complicated shifting mechanisms at the wheels. If this is the case for your bike, make sure your photos clearly depict how the chain runs through these parts. Failing to properly reinstall your chain in the drivetrain could cause serious damage to your bike, personal injury, or it could result the bike not working at all.

SUMMARY: Turn the bike upside or secure it in a bike rack. Evaluate the condition of the chain. Locate the master link on the chain, if applicable. Snap a picture of the drivetrain to make reassembly easier.

In one sentence, describe what the following article is about: Rube Goldberg machines transform traditional building materials, everyday items, and unique objects into functional pieces of equipment that work together to execute a simple task. Spend time gathering items from around your house, purchasing materials from stores, and/or hunting for unique objects at flea markets. Possible building materials include: Dominos Wooden boards Toilet paper rolls CDs or floppy discs Fans Toy cars Skateboards Action figures PVC pipe Duct Tape Peg boards Zip Ties Magnets Marbles String Get creative! Lay out all of your materials on your work surface. Once you're organized, start playing with the items. As you experiment, combine the materials in unexpected ways to form chain reactions. While you work, keep a record of what combinations worked. Ask yourself questions throughout the process. What object can you use to send a car down a wooden ramp? What materials will you need to make a pendulum? What can you make with a lever, a marble, and an action figure? Rube Goldberg machines complete a simple task with a complex chain reaction. You can break down the chain reaction into several different steps, or phases. The steps are connected together by a link. When you design the machine, it is helpful to start with the last step and work your way to the first step. You can create the building plan by listing these steps or drawing the machine. For example: Task: Pop a balloon. Step 3: A tack will pop the balloon. The tack will be attached to the front of a toy car. Link 1: The toy car will slide down a wooden ramp. Step 2: A pendulum will swing into the car and push it down the wooden ramp. Step 1: I will send the pendulum towards the car at the top of the wooden ramp. Sit down at your workspace with your notes and building plan. Quickly construct a prototype of your Rube Goldberg machine. This version of your machine doesn't have to be perfect. You'll build a final product later after you test it. If you run into an issue, don't panic. Return to your notes and see if you can combine the materials in a different way. If you are using tools, ask an adult for help.
Summary: Collect your materials. Experiment with the materials. Develop a building plan. Build a prototype.

In one sentence, describe what the following article is about: For a fan-forced oven, the temperature should be 40C.
Summary:
Preheat your oven to 175 degrees Fahrenheit (79 degrees Celsius).