I've showered in the morning for most of my life. There have been significant changes to my life in recent months. I moved in with my girlfriend. She owns a landscaping business. That entails working outdoors all day...in Louisiana. She showers at night. That's led to discussions about which is better. Not wanting to go to bed "dirty" is a great case for showering at night. Dermatologists say removing the day's grime in the evening is beneficial to to your skin, since your body does the bulk its repair work while you sleep. This is particularly important for women who use makeup. It's best to have no film on your skin, allowing it to "breathe". There's also the issue of intimacy. Everyone is more attractive when freshly bathed. It also saves time in the morning. By the way, research indicates more than 60% of Americans bathe at night.