Most of you here know me. You know I know how CITO works and I've been logging thoroughly with a scale for years and lost and maintained weight. I have a good idea what my daily calorie need is, and it's a wee bit above what MFP gives me. I know about water weight of course. When I'm depressed I have a tendency to gain weight as I'm eating too much candy on top of what I log. Or I stop logging.
Now here's the deal: I had one such period earlier this year and have been trying to lose a bit of weight again for two month. Result: nothing! Lots of fluctuation, but no loss. Trending app flat-lined.
Current weight 65kg
Maintenance calories according to MFP etc 1600, in reality more like 1750 plus exercise
Calorie budget: 1400 plus a part of exercise, though usually just 50cals
Exercise: run 4x per week, around 20km per week currently. 1-2x strength training, 1 hike (10-20km) or cycle (40-100km). On the long cycle or walk day I eat a substantial part of the extra calories back due to needing the energy there and then. On days without running/walking I still try to get 10k steps in. e.g. by walking to work or doing a little round in the evening. I've been doing this since before I wanted to lose those 3-4kg again. Thus it's not new exercise.
What's different to previous times? More running, less strength training because I have a running goal. Plus I'm currently unemployed. Not much difference there as I tend to work behind the computer. Though I have a side gig twice a week where I'm on my feet quite a lot. Could lead to water retention. But then there would still be a downward trend over two months.
Others: contraceptive pill on longterm cycle. Thus this doesn't play a role. Hypothyroid, well under control. Not constipated either. Changed scale battery, changed position: no change.
Basically, I can't explain what's going on.
Here's the unicorn bit (I'm sure you've been waiting for it!). In January I had an exercise test due to some potential muscular/metabolic issue I've been fighting with all my live. Not much came out of it, other than an unexplained high (as in: 100%) use of glycogen as energy compared to fats (and a lactic acidosis was found that persisted for days after racing to the doctor for the first consult. I know this happens sometimes). This at a heartrate that encompasses all my running, even the slowest trots. There's no explanation for it, and doctor closed case due to covid. His explanation is that the test went wrong and showed a faulty HR and in fact all is working normal. My argument that the data seems in line with 7 years of running data was wiped away.
But still, this can't just happen as I know I can lose weight, even though running has never been my primary exercise while losing weight. In case you're wondering: I also don't fret much about it. I step on the scale in the morning, curse, go on with my life until the next morning. I'm not stressed out either. Sleep well, all fine.