No, no, not the aerobic kind on a bike :)
I didn't have any flying classes on sunday, so I scheduled a free instructor, we took a Cessna 152, and went to practise induced spins and recovery. Spinning is basically the spiral dive that happens after the plane stalls sideways, causing the plane to fall in a spiral fashion.
Recovering from it was actually pretty easy, but it was good practise.
The funny thing is that after 5 times or so, the instructor was feeling a bit sick, and wanted to go home :)
I'll have to go back though, and do fully developed spins, the instructor I was with was a little too squeemish for that ;)