What are the best exercises for someone with asthma?

"Just do it": Exercises can't cure asthma; but those in good aerobic condition have less work of breathing, less minute ventilation, + are less likely to trigger bronchospasm felt due to cooling/drying of airways. Long distance cold air running most challenging, but are less affected by swimming or sports involving short sprints: LAX, field hockey, football, track, b-ball; pretreat with a bronchodilator.