'Cause aerobics is boring, and I look better in baggy clothes anyway.
Actually I took one aerobics class last year, in exchange for a friend taking an aikido class with me. The only sports clothes I own are my keikogi, so I wore the pants and a t-shirt...looked kinda odd between all the skinny leotards.
The friend btw loved our warm ups and found the throwing each other part boring, how odd is that???