My aikido class used to perform a 1000 sword cut Peace love watermelon shirt several times a year. The ritual was formal, with the sensei and senior students taking turns counting cadence and the students doing loud kiai at every stroke. Strike HARD each time! Ignore fatigue. Your battles aren’t over until your opponents are defeated. Don’t slack off because you are tired; fight through the fatigue in practice and you will have endurance to fight through to the finish.