In one sentence, describe what the following article is about: Studies have shown that walking 45 minutes a day created positive brain activity.  This brain activity helps the neurons of the brain survive.  Scientists believe it’s related to the influx of additional oxygen during the exercise.  Further studies have shown executive level skills like planning and scheduling were also improved by the walking program.  Additionally, the actual size of the brain, particularly the frontal lobe where cognition occurs, increases with exercise.  Add some weight to your walks.  Some research has shown that a small amount of weight has significant positive effect on brain health.  Put on ankle weights before the next walk for a mental health boost.  Work in the garden. Leisurely swim a few laps. Clean the house from top to bottom. Rake some leaves. Studies have shown that exercise that requires some mental steps has greater boosts in mental health.  Something that requires coordination like an aerobics class engages both the muscles and the mind.  A team-building obstacle course provides an outlet for not just the physical activity, but also strategy.  The key is that simple physical exercise has less of an impact on mental health than exercise including mental demands.  Try counting your steps during a run. Add up the total weight lifted when doing strength exercises (e.g. 3 reps of 20lbs would be 60lbs). Sign up for an instructor led class that will challenge you to memorize a routine. Improving coordination and balance is a sure-fire way to avoid potential head injuries related to poor mental health and degraded mental cognition.  By practicing something like Tai Chi, the muscles used to balance are strengthened and stabilized, and there is less chance of falling or head injury.  Doing some squats will strengthen various balance muscles in your legs. Try balancing on one leg.  You’ll wobble at first, but with enough practice, you’ll begin to stabilize. Head trauma has been connected to an increased chance of Alzheimer’s, and recent research in athletics has linked it to chronic traumatic encephalopathy (CTE).  CTE is a degenerative disease caused by multiple head injuries, including concussions.  Whenever engaging in physical activities that provide safety measures, always use them properly.  Wear a helmet whenever riding a bike or skateboard. Always buckle your seatbelt when available. Avoid contact whenever possible in contact sports. Dementia-related illnesses are diagnosed via an assortment of tests like brain imaging and blood-work.  Some drugs, or particular doses, may have a negative affect that exacerbates poor mental health.  Research has shown early diagnosis of symptoms related to mental impairment can help reverse potential cognitive impairment.  One study has shown that 80% of people with Alzheimer’s also have cardiovascular issues.  Take preventative measures by improving your cardiovascular system, lowering blood pressure, and lowering cholesterol, and you’ll improve your chances against Alzheimer’s.  If you are forgetting more often, having trouble with instructions, words are getting jumbled, or you're losing things often, you may need to see your doctor to see if these issues are related to Alzheimer’s.
Summary: Get physical exercise most days. Add mental demands to the exercise. Practice balance exercises. Wear protective headwear. Get regular checkups.

In one sentence, describe what the following article is about: Taking notes can help you to stay alert and pay attention during the lecture. You will also be more likely to remember the lecture if you take notes.  Write only the most important information and continue to actively listen while you write. Take your notes by hand. Most people learn more effectively by taking hand-written notes than by typing their notes. In addition, this can also make a long lecture go by more quickly. Most professors or teachers will allow students to ask questions or stimulate discussions during longer lectures. Participate in the lecture by asking any questions you have or make points during a discussion to help keep yourself alert and active. Raise your hand to ask questions or make a point during a discussion. Remember to not interrupt the lecture at an inconvenient moment. Chances are that you will have to take a class as a requirement at some point and it may be of no interest to you or relate to your course of study. Find a way to engage in the lecture or discussion by relating it to your interest in some way, which may make the lecture—and course—more bearable.  Be aware that even the most divergent subjects can have topics that overlap. For example, perhaps you have to take a class on German history and you're a pre-med major. Think about what you've learned in your classes about Germany and medicine and then use this information to make a contribution to the lecture. Ask questions to the professor or your fellow students. Preface your inquiries with a sentence or two about your position. For example, you can say “I'm not a history major, but I took a class on medical ethics and I was wondering how this was applied to the victims of war.” You may be having a hard time understanding your lecture, which can make it a marathon to endure. Studies have shown that most students only capture about 20-40% of the material that they're presented in part because they don't understand the way it is presented. By following up in class on difficult information, you may not only be able to get through your lecture, but also clarify hard concepts for you and your classmates.  Ask questions during the lecture if possible. You can inquire about points the professor has made or something that you didn't understand from the readings or assignments. Keep a list of points you need clarified if the professor doesn't accept questions during the lecture. This may help keep you engaged and awake during the lecture. Try and stay away from asking your neighbor questions, as it can disrupt the professor and other students. While it may be tempting, do not do any activities such as answering emails, texting, or reading during a lecture. Not only is this disrespectful to the instructor and your fellow students, but can actually make the time go by less quickly.
Summary: Write notes by hand. Engage in discussions. Show interest in the subject. Follow up on difficult information. Avoid multitasking and distractions.

In one sentence, describe what the following article is about: Depilatory creams usually work in 10 minutes or less, but it’s always good to check the instructions for the one you’re using.  Wipe off the cream immediately if you experience a burning sensation. Any pain means you’ve left the product on too long or your skin is too sensitive.  You may want to do an allergy test 24 hours before you intend to use the depilatory cream. Put a small amount of the cream on your forearm for the length of time recommended by the instructions. Remove and check for any redness. Do not use the cream if you have a reaction.
Summary:
Wait for the length of time specified by the instructions.