INPUT ARTICLE: Article: Caffeine is a stimulant, just like many of the prescription medications those with ADHD use to tame their symptoms. Because of caffeine's effect on the brain, when someone consumes it, the levels of a key brain chemical (dopamine) are increased. Someone with ADHD who consumes caffeine is better able to process information, and will feel more calm and focused. Excess intake may still cause the stimulant side effects however, which may include anxiety. The effectiveness of caffeine for ADHD depends on the dosage. Moderate doses between 200-300 mg can lead to increased energy, enhanced concentration, and boost emotional well-being. High doses, however, of greater than 400 mg can cause you to feel jittery and nervousness. No, this one is not mis-categorized. Yes, it does say decrease the brain's blood flow. Apparently in those with ADHD, this is a good thing. This is the exact effect ADHD medications like Ritalin have. The blood flow affects how well the person processes information and pays attention. Such a regimen can produce a high level of success at controlling ADHD. Studies have shown that when used in conjunction with each other, at low doses, the two treatments compliment each other very well. In combination with higher levels of caffeine, however, the prescription proved to be the equivalent of no medication at all.

SUMMARY: Stimulate away. Decrease the brain's blood flow. Combine caffeine with a methylphenidate medication.

In one sentence, describe what the following article is about: A stone with a rough or sandy texture should not be identified as a gemstone. A stone that is readily malleablei.e. easy to shape by hammering, crushing, or bending itthe stone is more likely a metallic ore than an actual gemstone. True gemstones have a crystalline structure. This structure can be shaped through cutting, fracturing, and abrasion, but it has fixed planes that cannot be altered by pressure alone. Don't hit a stone with a hammer if you don't want to shatter it. Real gemstones don't get bend or reshaped, but they do break. In particular, pearls and fossilized wood can be mistakenly classified as gemstones but do not fit the qualifications in the strictest sense of the term. Synthetic stones share the same structure, chemical composition, and physical properties of their natural counterparts, but they are created in a lab rather than made naturally. You can usually spot a synthetic by observing several characteristics. Synthetic stones often have curved growth patterns inside the stone rather than angular growth patterns. Gas bubbles are that are round and come in large strings are often an indication, but be careful, since a gas bubble in an inclusion can occur within natural stones. Platinum or gold platelets can stick to synthetic stones. Fingerprint-patterned inclusions are common in synthetics, as are nail-shaped inclusions, chevron (v-shaped) growth patterns, wispy veil-like inclusions, and interior columnar structures. An imitation stone is a material that looks like a real gemstone upon first glance in spite of the fact that it is made of a completely different material. These stones can be natural or artificial, but there are a few good techniques used to spot them either way. Pay a special attention while checking Turquoise, Lapis, Sapphire, Ruby and Emerald because there are many treatments available in market which make the stones same like natural The surface of an imitation may look pitted and uneven, like an orange peel. Some imitations have swirl marks known as "flow lines." Large, round gas bubbles are common within imitations. Imitations tend to feel lighter than their natural counterparts. Assembled stones are made of two or more materials. These stones may consist entirely of natural gems, but oftentimes, synthetic materials are mixed in. Use a penlight to illuminate the stone when checking for signs of assembly. Look for differences in luster or for colored and colorless cement. Also look for the "red ring effect." Turn the stone face down and look for a red ring along the outer part of the stone. If you spot the red ring, you probably have an assembled stone.
Summary: Feel the stone's surface. Check its malleability. Know which materials are not classified as gemstones. Watch out for synthetics. Watch out for imitations. Determine whether or not the gemstone is an assembled stone.

INPUT ARTICLE: Article: Consumers are bombarded with many ads every day. When writing a product description, you have a limited amount of time to get a consumer's attention. Use that time wisely. It is essential that you lead with a statement or question that grabs the reader's attention. Try appealing to the senses right away. In the coffee example, you could say something like, "Wake up in the morning to the subtle scent of rich and creamy vanilla." You can also ask your readers to imagine. For example, say something like, "Imagine there was a coffee that tasted as good as your favorite desserts." You can also try to appeal to the reader's identity initially. Try something like, "When you're drinking a cup of coffee, do you still get that same level of joy you felt when you started to drink coffee?" Tone is important when it comes to product descriptions. Different readers will respond to different tones. As you write, make sure you adopt a tone appropriate for the audience at hand. Think about your company's brand. Are you trying to come off as cheeky, fun, and a little sarcastic to appeal to a certain audience? Or are you a more serious business trying to attract customers who are also quite serious? The tone of any coffee advertisement could be one of lighthearted enjoyment, describing the pleasure or life improvement brought by the flavor and caffeine in the coffee. However, a more serious coffee company could focus on bean quality, origin, having a high caffeine content, or being ready quickly for the busy professional. Remember, you want to cover the product as fast as you can. Readers may scroll by if a product is long and wordy. Strive for a few brief and vivid sentences over lengthy descriptions. Things like bullet points can be particularly helpful, if you're able to use them. For example, instead of saying, "Our coffee has a smooth, creamy vanilla flavor that will make your house smell like a birthday party" you could break down these sentiments into a series of bullet points: "Silky smooth vanilla flavor!", "Fills your house with the scent of a birthday party!", "Instant relaxation first thing in the morning!" Many people read ads on a mobile phone these days. You want to make sure the bulk of your product description, if not all of it, will show up on a mobile phone screen. Short and simple is more memorable than long and complicated. You should also keep images in mind. If this description is being posted alongside an image, the image will take up space on the phone's screen as well. Do not just account for the text.

SUMMARY:
Start with a great opening. Use the proper tone. Cover the product quickly and vividly. Keep length in mind.