I completely understand the math and don't need an explanation on that.
This is kind of what I was getting at and why I mentioned that for some, especially if you're 20 lbs overweight, weight loss is easy and needed and when just getting into training or riding power gains happen pretty quickly as well. This is why I differentiated between someone who may be overweight vs someone who is at a pretty healthy weight already. At some point these numbers start to converge and the effort involved to lose 5 lbs, sustain that weight loss, and still put out the same power becomes more and more difficult. As in, if you're lean and strong but carry a bit of upper body muscle it may not necessarily be best for your mental and physical health to try to look like a pro tour rider so you can beat your group ride to the top of the climb or win more zwift races.
If you're just a naturally lean person and just getting into riding and/or training you can probably realize more gains by just training and getting stronger vs losing 2-3 lbs and seriously degrading your quality of life to do so.
I just see so much "lose weight, lose weight you gotta lose more weight" when it comes to cycling when most of us are doing it because it is fun and it makes our life more enjoyable. So is it really making your life more enjoyable to drop that extra 5 lbs

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