Endurance performance is always accompanied by minute lesions of muscles, tendons, connective tissue and capillaries. These micro traumata are the preconditions that muscles adapt and allow a performance on a higher level. The lesions can apply to muscle cell membranes, single fibers or bundles of fibers. Depending on the dimensions of the lesions muscle pains occur. Tendons and connective tissue suffer from ruptures as well. Small vessels can tear apart. Continue Reading →