题目内容：

短文改错

As we all know , walking is an useful way of exercising and is beneficial to our health. It can not only reduce the risk of many kinds of diseases but also builds up the bones. It’s safe than many other ways of exercising, especially for the elderly and it’s easy to do without consider rules. Beside, walking can also help us lose weight.

What should we pay attention during the walk? First, we should wear loose clothes or good shoes so that we can relax. Second, we should walk fast enough to cause us to breath with difficulty but still be able to talk. Third, that is very important to walk with our arms moving freely. Most important, we should do it every day.