1. I can't speak to that, no analysis here and the time frame (the low carb thing was back around 2008) is too long for meaningful comparison. 2. Maybe? For normal things, not really, but when I try to row for an hour I feel it. I definitely get cold more easily. 3. I'm not built that way. The low carb thing was completely annoyance-free. As I said, the goal there wasn't weight loss, but raising my HDL; the weight literally came off by accident. Intermittent fasting doesn't bother me at all. Calorie restriction, which I generally do by A. going longer without food -- up to 2+ days; and B. eating less/less carb-rich/processed foods; can be somewhat unpleasant if I push it too hard, but I generally don't. Some days I'm feeling it (in a good way) so I go longer without food, some days I'm not, and I don't sweat which is which much. 4. Generally not a factor for me. 4.1. Definitely not a factor. Two times like I said, weight loss wasn't really the goal, so not relevant; and two times I hit the goal I set (last time), or went further (this time). 4.2 Doesn't really apply, since I've never been visibly overweight? Like, my waist has never been close to half my height. I'm tall, so the large numbers aren't as much of a factor. Regaining weight has never happened to me faster than about 10 pounds/year (just a guesstimate).

The interesting thing will be once I stop losing weight and start rowing again seriously, can I get back to a reasonable performance level. Fingers crossed...