I Can Really Become Stronger If I Stay up Late

(Purely fighting with supernatural powers, not cultivating immortality) Feng Lin's idea of becoming stronger: training hard and persevering. Actual getting stronger: often staying up late and eating spicy food. Feng Lin came to the parallel world and found that the more unhealthy the people here were, the stronger they became, especially those who stayed up late. But they live a good life, it's in their genes. Only a chosen person like Feng Lin can easily stay up late.