The document discusses overload in sports training. It defines overload as exceeding an individual's capacity, which can negatively impact physiological and psychological functions with long-term administration. It lists important causes of overload as improper training load, lifestyle factors, socio-environmental issues, and health problems. Symptoms of overload include changes in behavior, poor performance, and somatic issues like sleep/appetite loss. Tackling overload requires recognizing causes, modifying training, improving nutrition/therapy, and potentially changing environments.