Re: Karate/Judo classes
Well, I've done Jujutsu (The more dangerous version of Judo really ^_^) and its fun just to throw people around.
And if you're learning self defense karate, that should be fun.
Make sure that you always BREAKFALL!!! On some harder takedowns if you don't breakfall you'll be in a world of hurt.
And try to make breakfalls a reflex rather than thinking of doing it (easy to do, trust me)