Context: Avoidance of triggers is a key component of improving control and preventing attacks. The most common triggers include allergens, smoke (tobacco and other), air pollution, non selective beta-blockers, and sulfite-containing foods. Cigarette smoking and second-hand smoke (passive smoke) may reduce the effectiveness of medications such as corticosteroids. Laws that limit smoking decrease the number of people hospitalized for asthma. Dust mite control measures, including air filtration, chemicals to kill mites, vacuuming, mattress covers and others methods had no effect on asthma symptoms. Overall, exercise is beneficial in people with stable asthma. Yoga could provide small improvements in quality of life and symptoms in people with asthma.

Question: What is a key component of control and preventing asthma attacks?
Answer: Avoidance of triggers

Question: What are some of the more common triggers?
Answer: allergens, smoke (tobacco and other), air pollution, non selective beta-blockers, and sulfite-containing foods

Question: What can reduce the effectiveness of medications?
Answer: Cigarette smoking and second-hand smoke

Question: What did law that limit smoking accomplish? 
Answer: decrease the number of people hospitalized for asthma

Question: What type of exercise can provide small improvements?
Answer: Yoga

Question: What is a main way people can prevent reactions to dust mites?
Answer: Unanswerable

Question: The two most common things used with corticosteroids?
Answer: Unanswerable

Question: What do sulfite-containing foods reduce the effectiveness of?
Answer: Unanswerable

Question: What decreases the number of people who are hospitalized for passive smoke exposure?
Answer: Unanswerable

Question: What methods have no effect on smokers quality of life?
Answer: Unanswerable