Today's class was notable for its similarity to a class I did -- tried to do -- about six weeks ago. After two of four sets of intervals I was done. Today, remembering that experience, I wondered whether I'd be able to complete the class. The class consisted of four 12-minute intervals, each consisting of four rollers, ridden in a fixed gear of sorts. We went at our base speed and cadence on flat for a minute, climbed for a minute at a lower speed and cadence, then descended in a higher speed and cadence for a minute at gradually increasing power/resistance levels. Four rollers constituted one 12-minute interval.
I was pretty cooked after first two sets of intervals, but I was only cooked medium-rare and was inspired to continue. After another, I was cooked medium, and after the fourth I was done medium-well. Glad I didn't have to go into well done. I must be fitter -- I completed this workout!