Your uncle,who wants to begin a structured exercise program but has asthma,asks you what precautions he should take when exercising.Provide several exercise-related precautions,given his condition.

(1)Always use pre-exercise asthma inhalers before beginning exercise.(2)Engage in extended warm-up and cool-down.(3)If the weather is cold,exercise indoors or wear a mask or scarf over the nose and mouth.(4)If you have allergic asthma,avoid exercising outdoors when pollen counts or air-pollution levels are high.(5)When you have a cold or other viral infection,exercise should be limited.(6)Never overdo exercise.(7)If you begin to experience asthma symptoms during exercise,stop and repeat pre-exercise inhaled medication.If symptoms completely go away,you may slowly restart your workout.If symptoms return,stop,repeat quick relief medication,and call your health care provider.