I just went to my second spinning class yesterday.
I meet up with bike friends every now and again and we have races/alleycats in the city. I tend to get smoked due to my lack of endurance once getting to high RPM's (I ride fixed wheel)
So I decided to do some spinning as its free with the gym membership I just got.
Im really keen on it, as it should techincally be the best thing for developing my speed & cardio.
But my god, those saddles are evil!
I was determined to keep my RPM's above 130 throughout so kept persisting despite totally crushing my balls. I tried to change saddle angle, change bikes but none was working and I ended up getting a pretty serious strain on my inner thigh!
Was better with a week of recovery but went again with a wrench this time, still was painful. I just cant understand why no body else even noticed, I think I was the only cyclist there yet I was finding it the most difficult because of the discomfort!
You need cycling shorts with a padded chamois. It will increase comfort when in the saddle tenfold. If you are shy about wearing "Spandex" then just wear them under some baggier shorts.
Those spin bike saddles can be brutal though I know. It's funny how people think skinny racing seats are uncomfortable without every trying them. The modern designs actually work quite well and are very comfortable. It's all about ergonomics. Most spin bikes come equipped with big, poorly designed saddles.