What is a counter-balancing muscle group?
The Principle of Counter-Balancing Muscle Groups: Muscles perpendicular to one another are called the counter-balancing or opposing muscle groups. An example of counter-balancing muscle groups would be your central quads and hamstrings, and your central adductors and central abductors. Another example would be your anterior lateral muscle groups and posterior medial muscle groups, and your anterior medial muscle groups and your posterior lateral muscle groups. Note that there are only four pairs of counter-balancing muscle groups in either your arms or legs. If your target muscle being stretched does not release tension by stretching its balancing muscle group, then you’ll need to stretch the counter-balancing muscle groups.
