My understanding is that humans pretty much use about the same amount of calories a day, whether sedentary or not. If you spend more on exercise, your body spends less on other things.

https://www.science.org/content/article/scientist-busts-myths-about-how-humans-burn-calories-and-why

The amount your body uses just to stay alive dwarfs what you'd burn from adding cycling to your day.

Edited to add the "much" that I somehow deleted.

I read a carbrain article a while ago that tried to argue that cyclists create more CO2 than a car.

So to compare that they assumed that

• The cyclist eats exactly as much calories as required, so that extra exercise directly requires an increase of caloric intake. They did the same for the driver.
• The cyclist exclusively covers the added caloric intake via imported japanese Kobe beef steak cooked on a wood grill.
• The car was the lowest-consumption electic car they could find.

And with that setup the cyclist actually created more CO2.

The author seriously booked that as a win for the car, claiming that cycling is not always better for the environment than driving.

If this is true, then support a carbon tax without exceptions. All the extra food cyclists use will be taxed extra.

If you drive in a 25 miles per gallon vehicle (pretty standard) you will burn the equivalent of 1100 calories per mile. Assuming an active person who rides their bike a lot eats around 2500 calories a day, and they ride to work every day, and they live 5 miles away. In the car you would burn about 11,000 calories a day, in the bike you would never burn more than 2,500 and that ignores the fact that actually most of those calories have nothing to do with the biking.

Also, one year of an average American driving (around 14,000 miles) would have the equivalent calories of giving 16,000 people a proper meal.

If the the Dutch are so climate couscous maybe they should invent energy-free travel

I am Dutch, have 0 cars, 2 bicycles, and I'm perfectly happy with it. I've only recently came across the first situation in which I felt like car access would be usefull.

A couple I'm friends with were pregnant and they don't have a car either, but since they wanted to be able to go to the hospital quickly and indepently, they rented a car for a week or so. This would't work for me because I don't have a drivers license. People often ask me 'but what if you need to do this or that...' and never do I feel like they're pointing towards a problem that I have. Just some minor inconvenience, if one at all. But in this case I thought, yeah if my wife were pregnant it would be damn usefull to be able to transport her by car, by myself. If it ever happens I'm sure we'll find a solution though. But I found it interesting that it was only the first situation in which it actually seemed usefull to me to have car access.

Guarantee that person has a BMI over 40.