Many health problems are caused by unhealthy habits that a person has learned. The most commonly discussed habits are smoking, drinking coffee, overeating, and addiction to drugs. Habits are automatic responses developed and used by the body to save time and energy. Because habits save energy, they are good if we want to keep the habit, but dangerous if we want to break the habit. Doctors often recommend that their patients replace an old habit with a new habit. For example, if a person wishes to break a smoking habit, the person might replace smoking with deep breathing or stretching exercises. When the person has a desire to smoke, he or she should then stand up and do the exercises briefly. This will be more effective than simply saying "no" to the old habit.

a) Read the text and decide if the following sentences are true (T) or false (F). On your answer sheet, write T or F next to the number corresponding to each sentence.

1. Few health problems are caused by unhealthy habits.
2. Habits save time and energy.
3. Breaking a habit can be dangerous.
4. Patients should not change old habits for new ones.
5. Physical exercises are more effective than refusing an unhealthy habit.
b) Write the main idea of the text. (10 p.)

c) Formulate questions to which the underlined phrases or words in the text are the answers.​