Brazilians love their showers. Many shower three times a day, and the AP reports that Brazilians are “the world’s most frequent bathers, taking on average 12 showers a week, putting rub-a-dub-dub up there with soccer and Carnival as essentials of the culture.”
Brazilians generally want to have a shower as soon as they arrive at someone’s house, to freshen up. Brazil can be hot country depending on the time of the year, so it is customary for them to ask their guests if they wanted to have a shower, including if they are not staying over.
Source: https://www.fluentin3months.com/strange-habits/, https://www.pri.org/stories/2015-03-13/drought-forces-brazilians-curb-their-addiction-multiple-daily-showers