How to Use the ‘80/20’ Rule for Running

via lifehacker.com

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We may earn a commission from links on this page. Runners often swear by the 80/20 rule for organizing their training—but there’s no relation to the Pareto principle of the same name. Let’s talk about where the 80/20 idea comes from, how to implement it, and when it is and isn’t a good idea to […]

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