It's common to overwork these areas, leaving them more vulnerable to muscle knots.
When a muscle knot forms, it's because nearby connective tissue - which helps to support and give structure to the body - has become restricted. This can happen because of overuse or an injury.

The body then protects itself by limiting movement in the affected area and lowering the chance that it will get further injured, says licensed acupuncturist and massage therapist David Sol, dean of massage programs at Pacific College of Health and Science in Chicago. The end result? Those tight bands of muscles we refer to as muscle knots or trigger points.