ANSWER:

You can’t expose your awrah or be in a place where people’s awrah is exposed. If there are private areas for showering where no one can come in or see you, this is permissible. 

For men and women, what is the ruling on changing in a same-gender locker room where the awrah is not fully covered? What are some possible solutions to this problem? What should we do if we are required to change at school during P.E. classes? Also, can we use the communal shower in locker rooms while naked? Detailed answer if possible.