People in the modern world are enjoying greater wealth but they are not as fit and active as they were in the past. What are the reaso-ns? Suggest some measures to solve this problem.
个性化引言段
I keep on nodding in agreement when seeing the background information of the question. I myself have always been struggling not to be overweight. Unfortunately, like most others, I failed. As to why people nowadays are not as fit and active as they were, various factors can be identified.