I can understand that there are some people without access to a shower that wouldn't be able to help this. However, for the majority of us who do have a working shower, I'd hope that we'd use it. For some of the people I know, not showering was a sign of serious depression and/or medical condition (like brain tumor). If you notice someone who suddenly goes from showering regularly to not showering at all, I'd suggest checking for other signs of depression.
