sorry. Im not going to buy that someone with a horrible diet on a standard bike is going to be less environmentally friendly than an e-bike. This is just a smell test thing. I will accept that e-bikes could beat out public trans or such and that some folks might do an e-bike where they won't do a standard one. Including those with bad diets who might not be able to handle to much of a workout and even great in shape folks can go farther or go to places and arrive in a condition appropriate to what they are going to with an e-bike.

Diet is a huge component of most people’s footprint. If you start biking 12 hours more a week (how much I would need to if I wanted to switch from my ebike to my acoustic for commuting*), you are going to eat a lot more. If a significant amount of those calories is coming from the standard beef you’d get at a US supermarket, its no surprise you’d be better off using a coal-charged ebike at similar speeds**. So much fossil fuels go into producing that. Tomatoes are worse than chicken apparently though.

*I’m not in good enough to bike at work in under 1.25 hours multiple days in a row and still be in good enough condition to do my job, especially if there are headwinds.

That is just patently false. You will eat slightly more. The majority of everyones calories goes toward keeping your heart beating and existing. It takes an extreme amount of working out to shift that needle and two hours of cycling won't do that. If you have access to a public gym with the equipment that can track calorie burn go see how much it takes to burn 100 calories. Body builders with extreme workouts can double their calorie intake but that is way more than some extra hours cycling. This is why when I did the napkin math I found the standing desk with relaxing over lunch will burn more calories than sitting and walking vigorously during my lunch.

According to my HR monitor, I typically burn about 750-1000 calories/hr when doing cardio exercise for 1 hour. Like, a 3 hour session, I might burn 2400 calories. My basal metabolism when sitting and standing is about 120 calories/hr.

Even with an electric bike, I sometimes burn like 500 calories/hr and that’s generally my trying to not exert myself (I’m bad at that). During actual bike rides, its more like 700 calories each way.

Reading through some sites, 0.5kcal/h seems to be average that when biking leisurely on a normal bike.

700cal/h would mean that you could cycle for 300h with 500ml of coca cola.