Sports to Godhood

On his eighteenth birthday, Li Ye awakened an absurd system—he could level up just by exercising, even growing stronger in his sleep. An ordinary high school student with average physical fitness suddenly had a shortcut to "idle growth": each step increased stamina, each jump boosted explosive power, and even closing his eyes to rest accumulated experience. His childhood friend Zhao Yang, who had superior physical ability, fiercely protected him; the aloof top student Shen Qingqian and the lively girl Xia Zhi successively entered his view; his ten-year-old sister Li Nuo stuffed a paper star into his palm—"Brother is the best." City competitions, provincial competitions, national competitions—he climbed the ladder step by step. But where did the system come from? What secrets lay hidden in that unspeakable old debt of the family? When everyone thought he had just "suddenly become enlightened," only Li Ye knew: the truly terrifying thing was the power of compounding time. — Description from novelcodex.org