this post was submitted on 04 Sep 2025
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traingang
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These kinds of system analyses are extremely sensitive to system boundary definitions. As mentioned in another comment, the only things they accounted for were "food", charging electricity, and manufacturing. You burn more calories when cycling so they put in some estimate of the carbon footprint of diet.
Of course, they didn't know what cyclists eat so it's just some average cribbed from some other system analysis. If you're a Bean Head then the number will be much lower. Same for if you fuel with sugar when riding or just do vegan protein powder, etc.
But more importantly they didn't factor in what it means to regularly exercise that much. If a person is doing that they are going to improve their overall health substantially, live a better life, use healthcare less, and so on. No carbon footprint info was calculated for this because of the system boundaries, but of course all of these things are connected. By the logic of this system, the best form of transportation is sitting on the couch.