I'd also like to add bicycling to the list. Road biking to and from school helps a lot especially if you ride in the bike lane like you're supposed to. Lots of places in LA don't have bike lanes so I'm in the right most lane and it has helped me get comfortable riding in traffic. I don't think anything is as fun as lane splitting on a bicycle
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Almost everything from a motorcycle applies to a bike too. Pushing on the bars, braking with both brakes, gears, but most importantly awareness of what's coming up and what's behind you.