Of course the morning shower helps to wake you up and get the body moving, but on the other hand the evening shower helps you to relax and unwind after a hard day. Makes you wonder how a shower can help you to wake you up and also help you to relax at night. Isn't that contradictory?

According to an article at Time.com, the answer you may be looking for is within your body. Here's the details-

If you take a shower in the evening, your body will heat up from the shower but will cool down after you step out and towel off. The lower body temperature could help you to sleep.

On the other hand, the early morning shower will help you along as you are up and going and your body kicks into gear.

So is there a real and definite answer for this question? Probably not. You'll just have to find out for yourself.