[QUOTE=jakejoh10;1268184]This is true to an extent, but the significance is much overblown. Sure, your metabolic rate will slow a bit as you get leaner (you burn less calories moving less mass), but it's not going to cause your entire body to shut down like some would make you think as long as you're eating at a modest deficit.[/QUOTE]
That is why I recomended at least bmr, that leaves a deficit once you get out of bed, more if you move more. Going constantly below bmr is crazy and you will not get enough nutrients, minerals and vitamins as well.