You Can Only Live for 3 Days at the Beginning

On the 10,000th day of his life, Zhang Chi obtained the "human-like" system. Fortunately, the system gives him three days of life at the beginning. Unfortunately, he only has these three days of life left... "Hell, main mission: complete an 8-kilometer morning run before 8 a. M., And the mission reward is 12 hours of longevity." Zhang Chi stared at the time of 8:05 on his phone, and instantly realized that half of his life was gone...