Muscle knots are hardened and tight muscles which feel tense, even when you’re not activating them with exercise. They accumulate in places liable to hold tension, like shoulder blades. A knot is an appropriate name, as muscle knots can feel like a rope under the skin when probed with fingertips. What are muscle knots? Normal muscles contract when in use and relax afterwards. Sometimes, they don’t relax post-contraction, and that’s when a knot’s formed.1 Knots are a tight band of muscle located in a trigger point. Causes of muscle knots Common...