The most efficient form of travel

[Kevin Ringwood]

Scientific American has published that a human on a bicycle is among the most efficient forms of travel in the animal kingdom.

I think you can see a few stories for free, so here is the link: https://www.scientificamerican.com/article/a-human-on-a-bicycle-is-among-the-most-efficient-forms-of-travel-in-the/

The bottom of the graph is more efficient than the top.