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I Watched it

LIsten to it too! Haha.....only kidding, but he does explain why in the video. The extended 5th is a near vertical climb that cannot be sustained, and that should signal you to get the hell out of the coin with your profits, because the retracement will be near 90% in most cases.

I liked his indicators of how to spot the BTC top - I need to start getting my shoes shined !