Teenagers have the energy ......
What is the reason of such behaviour?
What stops tennagers from going to bed early and makes them sleepy in the morning?
What is extremely important for teenagers?
When do our body produces melatonin?
When do young people start to produce melatonin?
What stimulates the brain and makes it harder for teenagers to fall asleep?
Most teenagers....
What is the result of not getting enough sleep?
In some American schools students did much better in class when they .....
Створюйте онлайн-тести
для контролю знань і залучення учнів
до активної роботи у класі та вдома