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In all the world's cultures, people sing, play instruments, and celebrate with music. It plays such an important role in our lives that all fields focus on its study, including one looking at the biology of music. Experts find that because of the way our brains process music, learning to play an instrument or just listening to music can have a wide range of benefits.   

Music education has received a lot of attention. Learning to play an instrument can help children improve math, science, and language skills. One study in Canada tracked children's IQ scores for nine months, discovering that children who studied music had the biggest test score improvements. The secret may lie in the way reading music and playing notes use several areas of the brain, increasing our ability to learn school subjects. For example, reading notes improves spatial (空间的) reasoning skills, which are helpful in solving math problems like fractions (分数).   

Music is also used for medical purposes, such as the treatment of diseases which affect memories. The secret lies in the way the brain processes music. One area near the forehead, the medial prefrontal cortex(脑前额叶外皮), connects music with memories stored in two other areas: the amygdale(杏仁核) and hippocampus(海马体). That's why an old song can remind you of something that happened years ago. For patients suffering from diseases like Alzheimer's, listening to music can help unlock buried memories by strengthening musical pathways to memories.   

With the evidence of music's benefits, it's no wonder some countries make music study a part of their education systems. People are recognizing that more than just a form of entertainment, music is also great for the brain.

Everyone gets tired-it’s a normal part of human existence and a good night’s sleep will often leave us feeling well rested.1．We can get overtired and feel a bit run-down which may affect our daily lives. Here are some things that may stop you getting overtired.

Being very tired frequently could be the result of lifestyle choices: poor diet or lack of exercise.2．Giving your body the fuel it needs could help you to feel more energetic, and therefore, less tired. If you’re feeling overtired, you might not want to exercise. However, regular physical activity may actually mean you are less tired in general. 3．

4．Reducing your stress levels may help you to feel less tired on a regular basis. Taking up an activity like yoga could help you to feel more relaxed and refreshed.

Finally, if you do find yourself feeling overtired constantly for days or weeks, you may be suffering from exhaustion.