Taking regular showers is very important, obviously, for many individuals. Some people shower in the morning, before they start their day, to wake themselves up and get ready for what is ahead (and go to work smelling fresh).
They find showers to be like an "alarm clock" of energy. Other people, however, like to shower at night. Showering at night gets them ready to go to bed and relaxes them entirely. Most people, overall, like to shower every day.