编辑一篇短文，使其更具流畅性和准确性。
一篇包含错别字或语法错误的短文。
以下是一篇含有错别字或语法错误的文章：

"I gonnna run to the stor for by some groceriez. But it ain't too far, so I ain't have to drive. Walking is good exercise anyways, and I needs it cuz I don't go to the gym no more. They're too overcrowded and too expenseeve for me."

以下是修正后的文章：

"I'm going to run to the store to buy some groceries. But it isn't too far, so I don't have to drive. Walking is good exercise anyway, and I need it because I don't go to the gym anymore. They're too overcrowded and too expensive for me."