Endurance strength. Boxing training workouts are always required to be tiresome and exhaustion. If the mind is not strong, there is no patience surely is the way that makes giving up and don't succeed.
Hardiness boxing training exercise over time, get tired and listless. If the mind is not strong, there is no tolerance. It was a way to give And ineffective
Strength endurance training boxing exercise all the time to get to the tiredness and fatigue. If the mind is not strong, have no patience. Is a way to give up and don't succeed.