arious forms of stretching have been used for millennia in preparation for subsequent activity (acute), training to enhance ROM (chronic), rehabilitation, psycho-physiological relaxation (i.e. yoga), and other scenarios. Evidence has accumulated over approximately the last 25 years for SS-induced impairments with prolonged acute stretching when performed without a complement of dynamic warm-up activities or with little time between the end of muscle stretching and commencement of physical activity. Mechanisms underlying acute performance impairments under these conditions have been attributed to neural, morphological and psychological factors. While SS-induced EMG decrements are inconsistently reported in the stretch literature, EMG normalised to the M-wave provides more consistent evidence for neural deficits. Reflex inhibition (i.e. H-reflex, E-reflex, GTO) from SS tends to dissipate quickly after 37SS