I tried to google some of the points I want to bring up here, but I didn’t find what I was looking for. So, I’m turning to this forum to seek answers from people with more knowledge than myself.
Yesterday I started my 44-hrs fast. I had my last meal at 20.00 on Sunday, and the plan was to fast until Tuesday at 17.00. I’ve fasted this long before without any issues. I did this twice last week with 3 days in between to refuel my body. I did strength training and light cardio during both of the previous sessions of fasting. I felt good and didn’t really have any problems completing the fast as planned.
However, yesterday went different and I had to abort the fast last night at around midnight. Here is what happened:
At around 15.00 I did a 40 minute cardio exercise without any strength training. Heart rate was about 160 during the training. The type of training was sustained cardio. No HIIT. I felt fine, though the muscles in my legs were sore by the time I finished. Two times during yesterday I ingested high-quality sea salt to replenish my electrolytes.
At around 22.00 I started feeling very tired, so I went to bed. I all of a sudden felt really cold on my feet and hands, and even putting a warm waterbottle in bed with me didn’t help. Neither did taking a warm shower. I felt dizzy, and just generally like something wasn’t right. I tried for two hours to warm myself, but nothing helped.
So, I decided to abort the fast, and I ate some home-made, sugar free yoghurt with some chopped pecans. I had a small-ish piece of spiced Norwegian salmon (100 g). I also took 1 teaspoon of honey, thinking that I might have depleted my glycogen stored too much during the cardio, and the effects I was feeling might be related to that. Ingesting the sugar from the honey would help me get some fast carbs into my blood.
After feeding I could feel the warmth seeping back into my body for the next 45 minutes, and I fell asleep.
I am going to restart my fast today, but today I’m probably just going to skip training altogether, or I might go for a walk to get at least some extra fat burn into this fasting session.
I’m 43 years old, male, and have been pretty much constantly in ketosis since august 2021. I have gone from 114,5 kg in August to 90 kg which I weigh now. My guess is that my body fat percentage is around 22 or so (I have not measured this. Just eyeballing it based on previous experiences and looking at pictures).
What do you think happened to me last night? Thanks for any input and shedding light on this for me.