Deep tissue work is more than just firm pressure. It involves identifying where muscles are stuck to one another, where tendons are not moving freely, and where other connective tissue of the body is restricting muscular range of motion. While not usually painful, deep tissue work can cause some discomfort while the restrictions are being released.
This modality is commonly useful during recovery from injury, for chronically tense muscles, and for lessening the effects of repetitive stress. It is often used in conjunction with other neuromuscular therapies and trigger point massage.