I'm an inertian being...
Whilst I'm working I won't eat, I won't sleep, and I'm pretty sure I won't breathe for extremely long periods of time, because I just can't stop.
When I'm not working, I can't get myself to get up, I may be thinking of doing the job, hell, maybe some ideas actually come up during my hiatus, but to actually getting them done is nearly impossible.
Inertia... sounds alien-like, doesn't it? I bet that a long time ago, some beings from outer space came down and looked at our civilization and how we were prospering. They calculated that in a relatively small amount of time we would get so advanced that we would become a considerable rival in obtaining resources from the galaxy/universe/space/whatchamacollit. So they zapped all of us with this ray gun that somehow slightly changed our nervous system making it slow down when shifting gears from rest to work and viceversa; this way, either we find it very difficult to start working, or, after we actually do stuff, find it hard to stop, resulting in us getting very tired, which itself provoques an even harder situation when we want to start working again. And, because you worked so much, this builds the illusion that you don't need to work that much the next time, but you should, because it's being a long time since you haven't worked, and you haven't done any work at all since then...
Logically, though, all of this should just then result in the extension of the time periods in which you're working or resting: more rest implies that you can withstand more time working, which would imply more rest, etc. And in the end, the active time put into work would come about the same, compared to the situation of a person working and resting in periods with constant lengths of time.
However, in my observations I suspect this is not the case, as only the rest time periods are the ones expanding and the work periods are actually shortening. Maybe the ray gun had another element: a logic reversal, let's say. The problem is that I haven't found an expansion/shortening ratio to the whole thing, so I can't verify this; maybe it isn't linear, damn aliens!
Whatever it is, though, it's the base of their intent, and the root of our demise... SAY NO TO INERTIA! I've fallen into it and can't get out, but you still have a chance. Tell your family, tell your friends, blog about it (copycat), tell the world! SAY NO TO INERTIA and let's kick those little green asses back to wherever they came from!