Four Day Fast – Day 2

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It’s deja vu all over again. After a lacklustre day-one, I had great results on day-two.

The Good

As I guessed, my blood glucose dropped before I went to bed last night, and I woke up with a much improved 6.7 mmol/L. Energy levels are great. I also feel sharper mentally, and have that sense of just feeling good that some argue comes with fasting. Why the good feeling? It seems that since my body is being put under stress for want of food, endorphins kick in causing a feeling of euphoria. An hour ago my blood glucose was a very solid 5.4 mmol/L. Boom!

I’m probably in ketosis now with all its disputed health benefits. I know there are some hard-core types out there who worry about not achieving full ketosis or enough ketosis or whatever. Health and fitness is certainly my hobby, but I can’t get too worked up about optimal ketone levels. I don’t think my hunter-gathering Celt/German ancestors cared too much 10,000 years ago.

Autophagy is another benefit of fasting; given my readings today, my body is likely eating itself…but in a good way. If you haven’t heard of autophagy, it literally means self-eating. My body is sweeping up damaged cells and other bits like organelles and proteins. If you don’t believe me, check out the work of Yoshinori Ohsumi who won the Nobel Prize in Medicine a few years ago.

So in the final analysis, a very good day for blood glucose levels and general health.

The Bad

I am jonesing for food at the moment (shock, horror). I know now why I haven’t done a water/coffee fast for more than a year. It is bloody hard compared to my “fat fasts”. I’m drinking water hand-over-fist which satiates me for an hour or so. Still, I’m half-way to the baked salmon finish line on Thursday; moreover, there’s always a mental boost when you wake up on day three and realise you can eat tomorrow. I will soldier on for you, dear reader.

Another downside is the dull headache that comes and goes after day-one for me. This is a byproduct, according to some, of ketosis: the so-called “keto flu”. Dr Mercola, whom Google is waging war on apparently, argues that this is just due to low sodium. He recommends taking salt several times a day whilst fasting. That’s what I do, and it seems to work.


I feel great overall, and I’m looking forward to seeing my glucose reading tomorrow morning!

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