Which of the following practices are NOT recommended for persons with asthma who desire to participate in a strenuous aerobic exercise program?

Warm, moist air is beneficial for asthmatics during exercise because it reduces the airway drying and cooling that typically trigger bronchoconstriction, making this a recommended practice.

Pre-exercise use of a prescribed bronchodilator such as a short-acting beta-agonist is a standard, guideline-supported strategy for preventing exercise-induced bronchoconstriction.

Persons with asthma should use a prolonged, gradual warm-up rather than a short, intense one, because a slow progressive increase in exercise intensity helps reduce the risk of exercise-induced bronchoconstriction (EIB). A short, intense warm-up abruptly elevates ventilation demands and can precipitate bronchospasm before protective adaptations occur. Extended warm-up periods have been shown to provide a refractory period that reduces EIB risk during subsequent strenuous activity.

Wearing a scarf or mask in cold weather helps warm and humidify inspired air, thereby reducing the cold-air bronchospasm trigger, making this a recommended protective measure.