The document discusses static exercises, which involve contracting muscles without changing length or joint motion. Static exercises include muscle setting, stabilization, and multiple angle isometrics. They are important for preventing muscle atrophy during immobilization, developing strength at specific joint angles, and activating muscles after injuries when movement is limited. Static exercises are indicated after surgeries or injuries when movement is painful or may interfere with healing. Contraindications include increased risk of high blood pressure and intra-abdominal pressure for those with cardiac issues.