Originally Posted by
ericm979
Other than getting crap bikes and padding and riding around on a field crashing with other people, there's not much you can do for practice.
Or try Cyclocross

I think I fell at least 5 times in my first CX race and I usually fall once or twice during practice sessions. Grass/sand/mud are all a fair bit softer than asphalt, so it's a lot easier to suppress the "must break my fall" instinct when you know the fall isn't likely to hurt much.