Muscular imbalance
There are around 800 different kinds of muscle problems. “Muscular imbalance” means that our muscles are out of kilter. This puts increased strain on our joints and tendons leading to tense muscles and poor posture. Long periods spent sitting down can be one of the causes, particularly if we are arching our back while doing so. This elongates and weakens our back muscles while shortening those in our abdomen.