Memory foam is designed to soften based on your body temperature. I was a bit worried that my Novafoam mattress might start to feel like a waterbed as the weather got hotter. (The Sleep Number salesguy told me as much.) Summer has started here in the valley, and so far, I'm still sleeping comfortably.
The state is that great fiction by which everyone tries to live at the expense of everyone else. - Frederic Bastiat