If you only shower once a day that means either you go to sleep at the end of the day covered in sweat, dirt, grime and underarm/genital mustiness or you start your day covered in bacteria, old sweat and body odor. Therefore an intelligent human being with access to running water and soap would bathe no less than twice a day to maintain optimal hygiene. To do anything less would be symptomatic of a barbaric and arrested mental attitude.
