Absolutely.
I don't even shower that often compared to most people. And for while, I'd shower pretty much only once every two weeks. I had school on weekends every two weeks, and I'd shower on Friday night and ride that for the weekend, then not shower until I had to go to school again. Well, one Friday, I was getting ready for my bi-weekly shower, and the water wouldn't heat up. I called maintenance and they couldn't get anyone to look at the water heater until I had to leave the house the next day. So I just went to class not having showered for two weeks. >_> I ain't taking no fucking cold shower for anybody.