Usually I will clean the bearings about every week. Ill also clean up the griptape graphics of any dirt that may have accumulated on it. Before I go to the park, Ill check to make sure my front axle is tight enough to secure the wheel, but not too tight to sacrifice speed. Ill also make sure the headtube clamp is nice and tight, because it sucks when your bars and front wheel get all missaligned after like an hour at the park. As soon as I can get riding again in like a week (Damn threaded fork) Im probably going to make it a habit of inspecting the fork, tube, and folding mech on a bi-weekly basis.