Waking Up In The Morning: Hot Or Cold Shower?

What is guaranteed to wake you up in the morning? Let me explain, I'm talking about taking a shower.

I am the type of person that has to have a HOT shower in the morning but most people I know say they need a cold shower to wake them up. I'm telling you right now, this girl has to have it scalding hot or I can't function and I pretty much have my kids used to hot showers as well. Call me crazy but if the water is even lukewarm, I'll wait until it warms up! So what wakes you up in the morning? Hot showers or cold?