Juan is 20 years old. when he exercises he often has trouble breathing. he also has trouble breathing when it is cold or he is around a lot of dust. he often finds that his chest gets tight and he wheezes. what chronic disease does juan have? what are 3 possible causes or triggers for the disease? can the condition be cured? what are 3 things juan can do to treat or cure his condition?

Mason joined the water polo team at his school. as part of his conditioning, mason's coach requires a 25-minute run during practice. mason's heart rate reaches 125 beats per minute, but his target heart rate zone is 138—183 beats per minute. what should mason do to get the most benefit for his heart? increase the amount of time he runs increase the speed at which he runs decrease the amount of time he runs decrease the speed at which he runs