Extreme risk takers rely on mental training so that fear doesn't hold them back.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/X2EfVsWKlVo" height="1" width="1"/>
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Extreme risk takers rely on mental training so that fear doesn't hold them back.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/X2EfVsWKlVo" height="1" width="1"/>