The question of when to shower has long plagued discussions on hygiene and cleanliness. There actually is a clear answer, says this University of Leicester microbiologist. LEICESTER, England: It’s a question that’s long been the cause of debate: Is it better to shower in the morning or at night? Morning shower enthusiasts will say this is the obvious winner, as it helps you wake up and start the day fresh . Night shower loyalists, on the other hand, will argue it’s better to “wash the day away”