Cheered me up

As a child I had many asthma attacks that inevitably lead to many emergency room visits. As is procedure, I was always rushed right in and medicated as soon as possible, but I remember one time specifically in which after recovering I was taken to a machine and asked to blow in as hard a possible. After doing this a few times they showed me how I did on a computer screen and told me that even though I had asthma, my lungs were very strong. Of course that cheered me right up and made me feel much better about myself and my condition.
P.V., Harrogate, TN