This question refers to the story "Sweat" by Zora Neale Hurston. In this story, we meet Delia, a black woman who earns a living by washing clothes for white people. The title of the story, "Sweat," references the physical labour that Delia has to engage in in order to support her family.
This work is also the reason why her marriage has continued for so long. Delia's husband is unemployed and abusive, and does not love her. He also cheats on her and beats her regularly. The "sweat" of Delia's work is the only reason why he has stayed. However, this situation has taken a toll on Delia. While she was pretty and happy before, she has now become overwhelmed by the difficult responsibilities that she has to deal with. This has greatly damaged her physical, as well as her mental health.