Post activation potentiaton (PAP) is a well know phenomenon and it has been demonstrated that both ballistic and heavy load resistance movements can induce PAP. However, traditionally PAP is of a short duration with performance gains due to potentiation fading by 16–20 min post-preloading stimulus. While it seems unlikely that the classic mechanisms of PAP (e.g. increase in the sensitivity of the actin–myosin myofilaments to Ca2+, enhanced motor neuron recruitment, and an increase in central input to the motor neuron) act outside this short timeframe, other associated mechanism such as hormonal change and positive psychological mood outcomes could all contribute to mediate performance over a longer timeframe. As previously mentioned free testosterone has been linked to motivation to perform, reduced fear and heightened assertiveness.