http://TheBadBackGuy.net Muscle imbalances may be the most misunderstood and misdiagnosed condition leading to neck pain, back pain, and sciatica. Muscles are often either synergistic or antagonistic. Meaning, the muscles either work with one another or the oppose one another. Opposing muscles do not oppose each other in a negative fashion but in a positive one. Like muscles that work together, as in synergy or synergistic muscles, antagonistic muscle groups work as opposites but they do so to move the body or to do any number of functions.