The demands of Rugby are hugely mental especially as the game goes on. The physical game means that players must be mentally robust enough not to hold back and avoid pain or contact when fatigued.
The game has so many physical variables and it is not predicable which element of physicality is going to be needed and when. Therefore players need high levels of mental toughness to be able to dive in and empty the reserve tank.
The Soma NPT 6 week Rugby Plan focuses on the mental demands of Rugby and works on keeping mental capacity high so that players can dig deep for the full 80 minutes.