I've upped my fat intake within the last 10 days and began feeling great in the last 2-3 days. Still dealing with some ketones as indicated by my sweet saliva and slight smell to my urine but I'm mostly adapted to the higher percentage now.

I've also continued my morning jogs even though it's getting chilly out. I decided I'm going to them up all winter long so I grew a beard. First time I've had one in over 4 years but it feels nice to have the change. I've been keeping the distance the same at 1 1/2 miles each morning, since I have to get ready for work after and don't want to get up earlier, but have been consistently upping the intensity. I've changed my running style from heel-strike to pad-strike which did a number on my efficiency but I'm working back to where I was at before. I ran/jogged the loop yesterday in 10 minutes which is just about where I stopped ~6 weeks ago due to my inflamed IT band. I'm also running without any pain which was the impetus for the change in dynamics.

Other than that life's been pretty boring.

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In a semi-related post I've been reading The Omnivore's Dilemma and it's been very informative. Such in-depth insight into "industrial agriculture", "big organic", and "small organic" (where I am now) really gives a lot to think about, a lot to discuss, and a driving force to re-prioritize your own personal food chain.
The book is inspiring me in two different ways;
I don't think I'll be ordering from Slanker's again unless I lose my current source for grass-fed beef. When you really examine how much oil is involved in transporting you food across the country it makes it seem like much less of a bargain. The food was good but the moral cost doesn't seem worth it to me.
I REALLY want to start up a farm like Polyface now. So many cool ideas and it just seems like a great life. If I ever come into a large lump of cash I know what I'm doing...buying up some land, starting a farm with rotational grazzing, and getting myself as far off the "grid" as possible.

Still going strong.

I've gone through a couple periods where I'll be more foggy headed than usual for a couple days and then it clears up.
I couldn't track down what the cause was and it was frustrating me. Seems to be better controlled now but still not 100% although this residual could be adrenal related I guess.
-At first I thought it might be some seltzer water (unflavored peligrino brand) I picked up to vary things up a bit instead of water with every meal. I had an 8oz bottle each night after dinner but the fog seemed to start the day after I began drinking them so I cut it out.
-I also noted that I began adding some celtic sea salt (as opposed to the Realsalt brand I bought a bunch of last time I bought sea salt) to my food at the same time so I cut this out.  I may test this out again in the near future and see what it does to me.
-I bought another 40 pound chuck primal cut last Wednesday and made some pemmican (with rendered lamb fat) with part of it. I'd been eating ~60% of my calories for the day as pemmican all weekend long and by Sunday night I started to get a bit of bloating as well as horrible smelling gas. This was accompanied by the same brain fog, a notable drop in body temperature (more on this to follow), and less resistance to the cold going around the house (got a sore throat and stuffy nose). This jogged my memory that I had run low on suet fat when the last instance of brain fog came about and had been supplementing with tallow. I cut pemmican out at that point and most of the symptoms have all gone away (haven't checked my temp yet). I don't know if it's a sensitivity to the cooking, an issue with how my body treats the lamb, or just coincidence but I'm leaving tallow and pemmican alone except for emergencies. I can look to re-test in a couple months when my digestion has improved some.

Now, back to temperature.
My body, as long as I can remember, has always run a low temperature. I'd usually read 97.1ish but even upper 96's weren't uncommon. Even when sick as a dog and running a high grade fever I can't recall ever going over 101.
This is common in my family and no one had any concerns about it so nobody ever bothered looking into it.
My mother has had numerous thyroid tests (as part of large panels her doctor does on her) and she's always checked out fine so it's not that.
I've been paying attention to it though and I've made some interesting discoveries along the way. In the past year I've had my food allergies under as much control as I could muster and it seemed to help my temperature a bit. I'd made maybe a 1/2 degree progress on things, measuring ~97.5 when I checked, and my perennially cold hands were grateful for this added warmth. Also in the past year I found a correlation when trying new foods. When not overtaxed due to constant allergy stress my immune system raises quite the response temperature-wise to allergens and I'll spike up 2 degrees in a couple minutes when I ate something bad for me. This was followed by a drop down to low 97's or upper 96's for the better part of a day at least.
Anyways, on a hunch I checked my temperature last Thursday and the thermometer read 98.4 and 98.7. A pretty clear indicator that my body is not overtaxed by my food source for now.
This is also how I knew something in the pemmican was a poor choice for me. My temperature Sunday night was 97.2.

Tried my first batch of high meat Sunday night as well (trying to help keep from getting that cold). I'd been culturing it for 2 1/2 weeks at that point so ate down two good size bites (~1" square). I've got to say I'm a bit disappointed in the flavor with the tangy smell it omits. I don't know if it made any difference but still no cold. Had another piece this morning and will continue eating at least a piece a day to see what it does for me. I've also got two bigger jars culturing from the last meat purchase on Wednesday.

That's about it for the last week and a half. Just keeping on keeping on.

nope, i get bloating and gas every time with pemmican. it also gets pretty smelly as djr was saying. i use it just in emergencies now.

So far it's only been from rendered fat, I'm fine with raw unless I really overdue it and get the runs but my threshold has gotten pretty high in the past couple months. Again, this was rendered lamb fat so it's possible that this is my problem and I'd be fine with beef fat but I thought I'd mention it to see if others had similar experiences. I'll defrost some of the lamb fat in a couple days and see how that sits.

I had it for breakfast and lunch both days. I had a small meal of grassfed beef muscle (chuck) and suet for dinner. My diet is so limited that I couldn't mix any more than that if I wanted to. I mono eat and also try to limit my water intake drastically for the 1/2-1 hour before and after eating to make sure my stomach acid is the strongest it can be while I adjust.

Yes, I am aware of this. All of my readings are done at roughly 7-8PM but especially the past couple I've done. The meals had been at the same time +/- 1/2 hour each day as well so it was as free of natural deviance as I could make it.

It sounds like your issue may be that you are not fully adapted to high-fat consumption yet, as fat does help the bowels to move--perhaps by lubricating the colon.