Sleeping mat

So I bought a used therm-a-rest inflatable sleeping mat today. It's an older style, before they got the winglock valve, but very light (344 grams with stuff sack), it fits me, and I believe the R value is around 3. Not bad for $45.

I also came across an interesting concept. MSR used to make a device that uses electrolysis to convert salt water to an effective water purification solution; potable aqua still does. There are a few changes I would make; there doesn't seem to be a good reason to have a separate bottle for the brine solution, when there are reservoirs for salt in the device itself. It's nice that it's rechargeable and has solar charging built in, but I don't see a good reason that the batteries couldn't be replaceable (maybe the electrodes wear out too and they don't want to make those swappable?). And it seems odd that you can select only a few volumes, from 1 liter to 20; seems like they could have just made 1, 2, 3, 5, and 10 liter settings, and allowed combinations. It would also be nice to have an option for 500 mL. Anyway, it's a very interesting concept, particularly because it works against all bacteria, protozoans, and viruses, and doesn't require (but would benefit from) prefiltering.

Anyway, my blood ketones this morning were at 0.8, so I was well into ketosis. I added some formulas to my keto chow calculation spreadsheet to show what my body weight will be at various body fat percentages. My goal with this round of keto is to get down to 10 percent, which should take me just about two months (and almost perfectly use up my supply of keto chow). From there, I really shouldn't let myself get back up to 20 percent again. Perhaps I should set a band; hit the upper end, say 17%, and that automatically triggers a diet until I get down to the lower end, say 13%. It would be appropriate to keep going in for a scan every 3 months or so to make sure my lean body mass isn't changing enough over time to throw off the calculation.

It's also high time I went on a stuff diet. I'm not sure I have the nearly 500 things to get rid of that it takes to do a "number of things=date, every day for a month" purge, but I definitely have extra stuff that can go. Hangar One bottles that I'm never going to cut, my razor scooter, that sort of thing. Particularly if I'm going to buy some Tyvek, netting, etc. to try to make into a bivy sack and a poncho tarp. Am I ambitious enough to sew a quilt? Maybe just a cowl first. I like the idea of a quilt with removable insulation tubes to adapt to different temperatures ranges; particularly with colder temps, because the tubes for the foot area could be shorter and held in the center of the quilt by cords, saving weight because the quilt will get wrapped around the feet anyway.