Extraneous load refers to any additional weight or burden that is not essential to the primary function of a system or structure. In engineering, this can include unnecessary materials or components that do not contribute to the intended performance, potentially leading to inefficiencies or increased costs. In the context of physical fitness, extraneous load can refer to excess weight carried by an athlete that does not enhance their performance. This could be in the form of unnecessary gear or equipment that hinders movement, making it important for athletes to optimize their load for better efficiency and effectiveness in their training or competition.