It is not appropriate to find a male coach in a girls' gym for the following reasons:

1. Female coaches will know more about how girls should exercise, what problems to pay attention to and be more careful, while male coaches will be relatively poor in this respect;

2. It is more convenient for female coaches to give specific guidance on some action essentials, such as those that require physical contact;

3. Girls look for male coaches to exercise, and others may gossip when they see them.