Coughing Today

So I got on the stationary bike last night. The original plan was just to do about 30 easy minutes (zones 2-3). But the stationary bike is so boring. So instead I did sprint intervals. It was all I could do to get up to 85 rpm, and I was seeing spots at the end of the fifth interval.
It was some hard work, but it had the desired effect of loosening up my lungs. Of course, now I'm going to cough all day.