Originally Posted by
Brandy
I tend toward a sloppy transition from standing to seated and I pause my pedaling before I sit. Riding fixed gear really helped correct this habit. I think I only stopped pedaling once before I learned that lesson. 
I'm not a natural spinner, so riding fixed really helped to increase my cadence. I grew accustomed to spinning at a higher cadence and it definitely carried over to the road bike.
I'll get back on the fixed gear soon.
Me too. I have my winter gearing at 69 inches and it's really helped my spin. I handle the sudden pack surges much better because I can spin up much higher before dropping a cog.
Get an old road frame that'll take full fenders, put some beefy tires on it, and ride all year.