Psychology says the way you process information can be explained by whether you shower in the morning or at night.

Even against the balmy London nights, I find myself foregoing a cold evening shower for a momentarily comforting warm one. And by warm, I mean hot. A fact I find myself embarrassed to admit until now.

For many of us, the day begins and ends with a shower. It's a simple, daily ritual that helps us wake up and wash away the day's stress. But an age-old question remains: what's the best time to shower ...