A person on a bicycle is by far the most energy-efficient among animals and machines per distance traveled relative to body weight. The bicycle is magic.

https://www.jstor.org/stable/24923004

@davidho I wonder how a rocket-propelled cross-country skier would stack up.
@StarkRG @davidho
[Sharks with lasers enter left]
@StarkRG @davidho
[A fruitfly boards the ISS]
@jerrej @davidho You'd have to measure the fruitfly's velocity relative to the medium it's in.

@StarkRG @davidho

But the chart from 1973 doesn't say. And in line with the rest of the conversation around this post, is it a vegan fruitfly, or African or Eurasian?