They work so hard and so long and so passionately for defending their right to exist in this world equally that they burn out from sheer fatigue. (nakedpastor.com)
There is fear in this and there is sheer fatigue in it. (religion-online.org)
Should Wenger choose the same approach as the Champions League, the sheer fatigue of travelling and playing three games a week will have its toll on the squad and will have a negative impact on the players, both physically and mentally. (justarsenal.com)