Answer:
Breathing is affected in higher altitudes for several reasons. One is that there is less oxygen. This makes it so less oxygen gets into your lungs. Another reason is that the air becomes cooler and drier. This can affect asthma.
Explanation:
I agree with the person above - it is true that vigorous exercise should provide a significant challenge to your cardiorespiratory system.
I would say making sure all the information on the patient's form is correct & that you have number of relative or someone close to them to call in case of emergency. also probably whether they'll be able to afford the treatment or how will they pay for it /what insurance? stuff like that :)