задание 1
Caffeine is considered one of the best natural stimulants. It reduces the feeling of fatigue, increases attention and improves mood. The main sources of this substance are coffee, tea, mate and chocolate.First, when it gets into the body, caffeine mimics the neurohormone adenosine, which slows down nerve impulses and causes drowsiness.Secondly, caffeine stimulates the release of the hormone epinephrine, which increases the heart rate and increases blood pressure, as well as increases blood flow to the muscles and provokes the flow of glucose into the blood from its depot in the liver.Third, caffeine increases the level of the neurohormone dopamine in the brain. This substance is responsible for feelings of well-being and happiness. It is the feeling of cheerfulness and recovery after a good Cup of coffee that is the cause of the addiction to caffeine.
задание 2
1. Caffeine improves brain function. A Cup of coffee increases energy levels and improves mental productivity. In fact, caffeine is the most widely consumed stimulant in the world. It increases alertness, concentration and relieves fatigue. 2. Shampoo with caffeine fights hair loss. With hair loss and thinning of hair is faced by both men and women. Caffeinated shampoos effectively fight this problem and restore healthy hair.
a) when did you phone your mother?
- I phoned my mother yesterday.
b) when did you play computer games?
I played computer games last Friday.
c) when did you walk in the park?
I walked in the park one day ago.
d) when did you help your mother with the housework?
I helped my mother yesterday.
e) when did you travel abroad?
I travelled abroad last year
f) when did you want to eat an ice-cream?
I wanted to eat ice cream last week end.
g) when did you listen to music?
I listened to music yesterday.
h) when did you are late for school?
I was late two weeks ago.
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