Lactate testing is the method which helps determine endurance training zones by establishing the point of acceleration of lactate level build-up. It is especially helpful for self-coached athletes so that the training ranges are borderline realistic and reasonable, allowing them to work at optimal levels with great returns on their input. Disallowing such a training the best average’ testing style, athletes will be able to reshape their power or pace curves to their event and speed or endurance goals attaining faster progress either by faster recovery or more endurance.