I completely forgot about the phenomena of Resolutors.
Resolutors are those folks that, post-or-during New Year’s, decide they are going to absolutely change their life. Usually this change of life decision is fueled by enough alcohol to create an everlasting flame; it doesn’t last past January and dies out.
That said, it does last DURING January and so, at 5:25, spin class was full. There was not a spare bike to be had, and yours truly had to camp out on the stairstepper.