Coffee has been a part of people's lives for thousands of ye

Coffee has been a part of people's lives for thousands of years,and today it is still one of the
Coffee has been a part of people’s lives for thousands of years,and today it is still one of the favorite drinks in the world.Many people in the world begin their busy day by drinking a cup of coffee or several cups of coffee.They have always said that a cup of coffee in the morning helps them begin their day in the right way.So they say a cup of coffee is necessary for them in the morning.
Do you know what in the coffee makes our bodies and brains active?It is caffeine.Caffeine may increase a person’s mental and physical abilities（精力和体能）.For example,two cups of coffee will make you breathe faster and augment body heat.All this makes your heart beat faster,and doctors warn that this may be a little dangerous.
Caffeine is found in tea,coffee,chocolate and some other foods.A little caffeine is probably not harmful.But too much caffeine can make people nervous and sleepless.What kind of drink is the passage about?what can coffee help peopie do what in the coffee makes peopie active how do peopie feei if they drink enough coffee?shuold we drink too much coffee before going to be
后面问号的是问题！@ 好者 亲们 亲们