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.
