OK, this is a wee bit gross, so if you're of a queasy disposition you might just want to skip over this and go read the latest installment of Hell is for Heroes, before I add the next bit.
Still with me? OK, so I'm up at 3:20am at the moment mostly on account of jetlag, and there's this infomercial on the telly about some natural health product or another, where the promoter is claiming that a lot of the minor ill health effects we feel nowadays (ie: chronic tiredness, etc) is due to the fact that we're carrying around a bunch of undigested fecal matter in our colons. Told you this was gross. Now while I normally wouldn't argue the point, aside from the fact that undigested fecal matter is an oxymoron, given that it's not fecal matter until it's at least partially digested, before that it's just undigested food.
The 'Health Expert' (that's what the show calls him. Not even a doctor?) claims that people have 15-40 POUNDS of this gunk stuck on their colon walls. Now what is want to know is, is the colon actually that big? I'm a fairly big guy and even I feel uncomfortably full if I eat more that about a pound or two, and I always thought the colon was smaller than the stomach. So how can one have even 15lbs just coating the walls, let alone filling the whole colon? It just don't make no dang sense to me.
Too tired to think of another shameless Hell is for Heroes plug, so just go read the damn thing.
