In one sentence, describe what the following article is about: An experiment is a test, or series of tests, to disprove your hypothesis. If the experiment fails to disprove your hypothesis, that means that it may be suitable for making predictions about the question you have posed. If the experiment disproves your hypothesis, it means that the hypothesis does not accurately predict the outcome of the situation. You might decide that your experiment will be to shop at Store A and Store B and compare the money you spent at each store. Once the experiment is laid out, you will need to carry out the steps. It is important not to carry out the experiment with bias. The scientific method does not allow for tweaking the experiment to make the results fit what you want.  For example, you must commit to buying the same foods at each store for a fair comparison. You should not buy the name brand at Store A, and the off brand at Store B to draw the conclusion that Store B is cheaper. In this scenario, the foods serve as your control and the stores are your variables. Sometimes, experiments do a poor job of testing the hypothesis. When this happens, you have to troubleshoot your experiment. Ask yourself what went wrong, and how can the next experiment address these issues.  For example, you could compare receipts from each store and think that you are saving $15 per week, but you only notice an extra $5 per week leftover. Upon a closer investigation, you realize that you have to buy extra gas each week to get to Store B, and that detracts from your savings. At this point, you would need to redesign your experiment to include gas receipts as well.
Summary: Design an experiment. Carry out the experiment. Troubleshoot if necessary.

Stress is good for you in small doses because it keeps you on your toes and it helps to remind you that you're alive and need to be careful in certain situations. Excess, pronounced, and never-ending stress typical of our modern way of living, however, kills brains cells and ages your brain faster.  To decrease your brain age, reduce your exposure to and intolerance of stress by finding ways that minimize it, ways that work for you. Some ideas include:   Meditating. Meditation is one of the more effective methods for reducing stress in your life and it can be done at home, at work and even while traveling. Taking up a physical activity that releases stress, such as yoga, martial arts, kickboxing or tennis. Learning to be more assertive and to express yourself. Assertive people are better able to state their needs and wants politely but firmly. Expressing yourself clearly and refusing to allow yourself to be used or swayed by others is a good way of keeping stress at bay. Exercising more. Exercise wards off the effects of stress by burning off the stress hormones and chasing away the cortisol that destroys brain cells. Mood improves with exercise too, as noradrenaline is secreted and endorphins enter the bloodstream. These substances give you a lift and help to ward off depression. . Your attitude affects brain activity and influences your mood and emotional state. A positive outlook that allows you to maintain a belief in your value and self-worth will allow you to live a fulfilled life in which your brain remains open to new possibilities. On the other hand, constant negative thinking can easily shut you off from continued learning and growth, which will cause your brain to age faster.  Learn to control negative thinking. The first step is to recognize negative thoughts. The second step is to change the thoughts to something more realistic and positive. Changing negative thinking is the same as changing any other bad habit. The more you practice positive thinking, the more your brain will respond. Work on your emotional intelligence. When you have emotional intelligence, you can recognize your emotions, reason with them and use them to enhance thought. You will be more creative, make better decisions and implement positive solutions to problems. The better you get at mastering your own emotions, the better you'll become at enabling constructive emotions in others as well, which will create more fruitful connections in your life.   Reframe the Past in your mind. While you cannot change the past, you can change your attitude toward it and avoid slipping into a victim mentality. Re-examine events that brought you shame, guilt, humiliation, sadness and fear so that you can let them go and move forward. You'll decrease your brain age with a better attitude because you'll remove useless, energy-sapping thoughts and replace them with healthier, forward-looking and self-forgiving thoughts that will energize you. . People who love what they're doing in life tend to experience a greater sense of purpose and happiness. You may not be in your dream job, activity or relationship, but you can find things to be grateful for in the life you're leading. Mix up work tasks every day and pursue plenty of other activities to add playfulness, interest and fun into your life. When undertaking mental workouts, be sure to focus and concentrate properly. You won't get benefits from simply going through the motions – you must really throw yourself into doing the mental workout activities with full attention.
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One-sentence summary -- Cope with stress. Improve your attitude Do What You Love Give mental exercises 100 percent of your effort.

Problem: Article: Wet fibers absorb dye more easily than dry ones. Make sure your sweatshirt is thoroughly soaked, then wring out any excess water. You can also use this step to wash your sweatshirt to make sure there aren't any fixatives, dyes, or fabric softener residues in the material that will affect color saturation. Follow the directions on the dye package to determine how much water you should add to the dye. Add about a cup of salt to the dye bath to help the color set in. Experiment with different ways of manipulating the fabric for different tie-dye effects. Use rubber bands to tie off sections of your sweatshirt, making sure to secure it tightly so the dye doesn't bleed.  You can get different looks by folding, swirling, and crinkling your shirt. Use multiple rubber bands in the same area to get a bulls-eye effect. Your sweatshirt should be immersed in the dye for about 10-30 minutes, depending in the color you're trying to achieve. Leave it in less time for a lighter color or more time for a deeper shade. If you're dying your shirt more than one color, you'll need to hold each section in the dye for the required amount of time. This takes a little patience, but it really allows the dye to spread into the folds of fabric and create those cool tie-dye effects. After allowing your fabric to rest overnight, rinse the dye out with cool water until the water runs clear. After it is thoroughly rinsed, cut off the rubber bands and see your new masterpiece!
Summary:
Soak your sweatshirt in warm water and wring it out. Mix your dye and add it to a large pot or plastic bin. Fold, twist, or tie your sweatshirt into a pattern. Dip the sweatshirt into the dye mixture. Place your sweatshirt in a plastic bag and allow it to soak overnight. Rinse your sweatshirt in cool water, then remove the rubber bands.