Problem: Article: To really challenge yourself with a difficult routine, do 3 sets of 15 vertical leg crunches, with a brief pause in between sets to keep your muscles working. The shorter the rest period in between sets, the more difficult of a challenge the workout is for your core.  Add other abdominal exercises to this routine to make the workout even more intense.  Use good technique throughout the whole workout; don’t let your form break down as you get tired. Take a rest if you need to, then return to the movement using good technique. Instead of supporting your head with your hands, extend your arms and reach toward your toes when you perform the crunch. Reach as far as you can and hold at the top of the movement for 2 seconds before you slowly lower back down to the ground. Reach as far as you can without rounding your shoulders and upper back. To really ramp up the difficulty of the vertical leg crunch, hold a rounded weight plate against your chest or behind your head when you perform the movement. Use good form and hold at the top of the movement for 2 seconds before you lower back down with control.
Summary: Do 3 sets of 15 repetitions. Extend your arms to increase the difficulty. Hold a weight on your chest or behind your head.

INPUT ARTICLE: Article: If you're harvesting bamboo for an at-home project, you'll first want to select the proper culms to harvest. Culms are stems of bamboo that shoot up from the ground. Look for culms that are longer and straighter in appearance. These bamboo culms may be sturdier and their width tapers off with height. This means you'll have a variety of sizes to work with when using the culms for at home projects. Before you begin curing and storing your bamboo, remove any infected culms. Culms that contain fungus, bugs, or other problems can infect the rest of the culms.  Look for circular ring patters, which can indicate fungus. While fungus is mostly cosmetic and can be removed, it can be a pain if it spreads. If you only have a few culms that look like they might have fungus in an otherwise healthy batch, you might want to simply toss the infected culms.  Some viral infections leave mosaic-like patterns on bamboo culms. These culms should be discarded. You should also get rid of culms infected with a black, sooty mold.  Bugs and parasites can infect bamboo culms. Watch for a white substance on shoot tips. If you notice such a substance, peel back the culm leaves and look for small, pink bugs. Such culms should be discarded as the pesticides required to treat such infections are pricey and time consuming. Once you've gathered culms and checked for infection, prepare them for the curing process. It's easiest to simply use a grill to cure bamboo for home projects. Therefore, you may want to saw the bamboo culms into manageable pieces of 4 feet or so. You can use a saw or clippers that can be purchased at most hardware stores. You can use an outdoor gas grill to cure bamboo at home. You should remove the racks from the grill and then place the bamboo culms inside one at a time.  Turn the heat to high. Watch for the bamboo to change color slightly. This indicates resin rising to the surface, important to the curing process as it strengthens culms.  Take an old rag and rub the resin into the bamboo culms. The color of the bamboo should slowly change from deep green to mint green. Once the entire culm has reached this color, set it aside somewhere to cool.  Wait for the culm to be cool enough to handle. Then, poke holes in its inner membranes. You can use any tool that can poke through bamboo culms, such as sharp scissors. This will quicken the drying process. Always wear protective gloves during the curing process to avoid getting burned. When setting bamboo out to dry, choose a non-flammable surface to avoid fire.

SUMMARY: Select bamboo to harvest. Watch for infected culms. Prepare  your culms. Use heat to cure the bamboo. Take safety precautions.

In one sentence, describe what the following article is about: Smoking a drug can cause red or watery eyes. Pupils that are constricted or dilated can be a sign of narcotics, stimulants, or club drugs. Check for rapid or unnecessary eye movements. Involuntary eye movements, or nystagmus, are symptomatic of many kinds of drug use. If someone is wearing sunglasses inside or in the shade, they might be trying to hide red or otherwise affected eyes. Someone who has smoked marijuana might smell sweet, smoky, or skunky. A chemical or metallic smell might mean they inhaled a toxic household product, such as glue or paint thinner. A smell of incense, air freshener, or powerful perfume or cologne might be intended to cover up the smell of a drug that has been smoked. Listen to his swallowing and observe the way it moves. Salivation and lip smacking can be signs of dry mouth, a sign of drug use. Licking of the lips, frequent clenching of the teeth or twisting of the jaw might mean that someone is high on club drugs. A bloody nose with no other apparent cause can mean that someone has snorted a drug, such as cocaine, meth, or a narcotic. A runny or congested nose can have many causes but combined with other symptoms it could signify that someone is high. Frequent rubbing of the nose can also be a sign. Someone who has snorted a drug might have powder on her nostrils or upper lip. Shaking hands can be a sign of club drugs, inhalants, or hallucinogens. Palm sweat can be a sign of intoxication. Burned fingertips can be a sign that crack cocaine was smoked. Pulse, rate of respiration, temperature, and blood pressure can all be affected by drug use. If you feel safe touching the person in question, take his pulse and check his temperature. Cold, sweaty skin is one sign of drug use. An increase or decrease in blood pressure, an increased heart rate, or slowed breathing can all be signs of drug use. Some drugs can cause chest pain, and even heart attacks. Seek medical help for someone who seems to be experiencing pain in his chest. People who use drugs such as methamphetamine, bath salts, or heroin often inject their drugs, which leaves track marks. Check for darkened veins, lesions, and bruising around the veins. Lesions that are open and in the process of healing can be signs of recent drug use. Sores or a rash on the mouth or nose can also be a sign of habitual drug use. While pipes, rolling papers, syringes and rubber tubing might be easily recognised as drug paraphernalia, the unwarranted presence of household objects can also indicate recent drug use. Bent spoons, eye droppers, and cotton balls may be indicative of narcotic use. Razors, handheld mirrors, and tiny spoons might indicate the use of stimulants. Pacifiers, candy necklaces, and lollipops may be used by people on club drugs, such as Ecstasy, that cause the jaw to clench.
Summary:
Look into the person's eyes. Smell the person. Observe the person's mouth. Observe the person's nose. Observe the person's hands. Check the person's vital signs. Check for signs of habitual drug use. Check for drug paraphernalia.