Furthermore, a mendicant feels a little sick. They think: ‘I feel a little sick. It’s possible this illness will worsen. I’d better preemptively rouse up energy.’… This is the seventh ground for arousing energy. Furthermore, a mendicant has recently recovered from illness. They think: ‘I’ve recently recovered from illness. It’s possible the illness will come back. I’d better preemptively rouse up energy for attaining the unattained, achieving the unachieved, and realizing the unrealized.’ They rouse energy for attaining the unattained, achieving the unachieved, and realizing the unrealized. This is the eighth ground for arousing energy. <b>What eight things are hard to comprehend?</b> Eight lost opportunities for spiritual practice. Firstly, a Realized One has arisen in the world. He teaches the Dhamma leading to peace, extinguishment, awakening, as proclaimed by the Holy One. But that individual has been reborn in hell. This is the first lost opportunity for spiritual practice. Furthermore, a Realized One has arisen in the world … But that individual has been reborn in the animal realm. This is the second lost opportunity for spiritual practice.