Some days, it's impossible to find a "runner’s high" — or, really, any resemblance of inner peace while exercising. It doesn't matter what those motivational posts on Pinterest tell you; there are some things "fitspiration" can't fix. So, we've pinpointed your 15 biggest workout woes — from nagging problems such as shin splints and chafing to a lack of motivation and a too-packed schedule. And, we've got the smart solutions.
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