A common mistake runners make when coming off of a long break (one that lasts four weeks or more) is doing too much too soon.
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The definitive 10 types of running explained

Some say seven, others reach for eight, but I'm declaring 10 main kinds of running, then explaining what the heck each one is ...
Learn what happens under the hood when you’re pushing top speed, and what it takes to increase your pace for 26.2.