When athletes cannot perform training intervals at required stress levels for four consecutive training sessions, they demonstrate their final stress levels. When athletes cannot perform training intervals at required stress levels for four consecutive training sessions, they should return to their last successfully completed stress levels. Those stress levels are their final stress levels. Because athletes' psychological limits are lower than their physiological limits, wherever possible, athletes should not know the stress levels at which they are performing. Frequency Training program designers must carefully control training session frequencies.
Athletes train daily.
However, when athletes tear connective tissues, they should not train daily. When endomysium connective tissue tears, athletes increase urinary hydroxyproline excretions. Body building training programs frequently increase urinary hydroxyproline excretions. Sport activity training fitness programs should not tear endomysium connective tissues. Some researchers argue that anaerobic athletes cannot train daily.