translation.en: Our brain acts as a limiter, preventing us from accessing all of our physical resources, because we might hurt ourselves, tearing tendons or ligaments.
translation.zh: 我们的大脑如同一个限制器一般， 阻止我们动用全部的生理能量， 因为我们或许会伤到自己， 撕裂肌腱或者韧带。