Everyone has different music tastes. Many researchers believe that music has a calming effect and is good for the people who enjoy it. Here are some kinds of music and their effects on the body.
◆①____
This kind of music has been found to reduce（减缓） stress （even for people who are not too interested in classical music ）and improve certain kinds of intelligence. Listening to classical music
also has a very calming effect on heart rate and can be helpful for people with heart disease. ◆②____
Indian classical music therapy（疗法） is often used for insomnia. A study found that listening to Indian classical music can improve the quality of sleep of patients who experience depression（精神 忧郁）.
◆ ③____
Hip hop music has a different effect on a lot of teenagers. On the one hand ，this kind of music can cause bad feelings，and on the other hand，it is such energetic music that it makes you want to get up and dance.
◆④____
If you don't like listening to rock music,then listening to it can make you feel angry and increase your heart rate and blood pressure. However,if you enjoy listening to this kind of music,it can help
you to reduce stress without affecting your heart rate or blood pressure.
