It helps people block out other noises and focus more on what their doing therefore music helps people concentrate then without music.
It is possible for anxiety to affect a student's performance. It could affect their ability to concentrate.
they will not be able to see, obviously.
Stroke.
Yes. Alcohol depresses the executive functions of the brain, one of which is the ability to concentrate.
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If someone had an injury that damaged the cerebellum it would that affect the persons ability to drive a car. This is the part of the brain that is responsible for the coordination of motor control and once its is damaged, driving might be almost impossible.
No, because it does not affect a persons motor skills or ability to play sports in anyway.
Certain liquids can greatly affect a person's heart rate. Someone that drinks a lot of caffeine may notice an increased heart rate.
Something with the brain. I believe it impairs your ability to perform certain tasks.
yes low iron can affect sleep. many side affects are also linked to lack of sleep, poor school work, attitude, muscles, eyes, ability to concentrate etc.