It depends. Where do you live, how much do you sweat, and - important - how much stress you are under.
When I lived in a climate that was regularly over 40C, sometimes I showered twice a day. Now I live in a cool climate, and every 2-3 days is usually fine. But if I'm under stress, it's back to daily.
When I lived in a climate that was regularly over 40C, sometimes I showered twice a day. Now I live in a cool climate, and every 2-3 days is usually fine. But if I'm under stress, it's back to daily.