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Muscle knots are highly irritated muscle fibers that have tightened into a ball in one area of your muscle. These painful, tender spots can feel sore and often occur in your upper back, shoulders, or ...

These tender bumps in your neck or back can be a pain, but a few research-backed strategies can help to relieve discomfort. By Danielle Friedman If you’ve ever had a shoulder massage or used a foam ...