[graemep]

> So you can push other parts more if that makes sense: top cyclists can do 400-600 W sustained or 1-2 kW in short sprints.

Very few people are top cyclists, or top anything else. Top cyclists are doing it as a sport, not as a means of transport.

> Anyway, from the CO2 perspective, biking vs walking is splitting hairs really

I agree. I am responding to people who are claiming it is better than walking to a significant extent.

[tpm]

> Top cyclists are doing it as a sport, not as a means of transport.

Well you were mentioning exercise, so I reacted to that. The point is everyone biking as exercise can push more watts than when walking, if they want to.