I used to be amazed at how short Tree-Hugger's showers were, thinking she was just being eco-friendly and trying to save water. But now I'm not so sure that's the only reason.
Here is what happens every time I take a shower:
I turn on the hot water, which is always scaldingly hot. I turn on the cold water, which does nothing. I turn the cold higher. Still nothing. More cold. More cold. More cold. Finally, the hot water is just un-hot enough that I can bear it, so I get in.
After about one minute, the shower starts to get cold. I turn the cold down, and it returns to a nicely warm temperature.
After another minute, it starts to get cold again. I turn the cold down, and it gets warm again.
I repeat this process of turning the cold down until the cold water is turned all the way off. Then, when the water starts going cold after that point, I turn the shower off completely.
I haven't actually timed my entire shower length, but I've noticed that I've been taking much shorter showers than I did when I lived at home.
I suppose that's a good thing.