<qa>  What is the GER twice of less per week?Two groups of patients will be studied: those with asthma who have difficulty with exertion, those without asthma who experience difficulty with exertion. Both groups will experience gastroesophageal reflux GER twice of less per week. Patients will complete a treadmill exam to determine their VO2 max. They will then undergo pH monitoring while exercising for 30 minutes at 65-70 of their VO2 max. Subjects will be given placebo or acid suppression pill for 12 weeks. At the end of 12 weeks, the subjects will repeat the exercise 30 minutes and 24-hour pH study. 