There isn’t one single type of “knot”, but there are a couple:
You can have a spasm in a muscle that causes it to “bunch up” and form a knot, which you then work out. The act of massage helps to stimulate blood flow, helps to relax the spasm and the knot “dissolves”.
A more typical knot is often just a very sensitive point on an overworked of strained muscle, and/or the surrounding fascia (connective tissue) that you break up with massage. Again the stimulation of blood flow is the key here.
Mostly a knot is just a part of a muscle that, for reasons of spasm, “sticking” to fascia or mild inflammation, is less flexible and pliable than usual.
Latest Answers