By eHow Sports & Fitness Editor
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The 50-50 grind is an intermediate snowboarding trick you can use to transition down kinked rails. The only thing separating kinked rails from regular rails are their kinks, which are elbow-like bends in their shapes that present an added challenge to riders. In order to 50-50 grind these rails, you'll need good balance and a lot of confidence, both of which you'll gain from practice.
eHow Sports & Fitness Editor