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Have a deep, aching pain in your upper hamstring or butt? It might be an injury called High Hamstring Tendinopathy. Here's the scientific signs, symptoms and research-backed treatment solutions for this little known, but very aggravating, injury: http://runnersconnect.net/running-injury-prevention/high-hamstring-tendinopathy-injuries-a-pain-in-the-butt/
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