[andreareina]

Source? In cycling those numbers are elite level if not beyond. Numbers for rowing are hard to come by but lower[1], probably drag lowering efficiency (bicycle drivetrains are 90+% efficient).

To put it into perspective, 250Wh translates to 800~900 calories burned in a half hour[2]. That's not something most people around me can do.

[1] https://rowinglevel.com/rowing-times/10000m-times

250Wh = 900kJ = 215 kcal at 100% efficiency; humans are ~25% efficient at turning food into mechanical work so ~860 with error bars

[robocat]

Yeah, they are wrong.

  During a bicycle race, an elite cyclist can produce close to 400 watts of mechanical power over an hour and in short bursts over double that—1000 to 1100 watts; modern racing bicycles have greater than 95% mechanical efficiency. An adult of good fitness is more likely to average between 50 and 150 watts for an hour of vigorous exercise.[clarification needed] Over an 8-hour work shift, an average, healthy, well-fed and motivated manual laborer may sustain an output of around 75 watts of power.

- https://en.m.wikipedia.org/wiki/Human_power

Also see “How Much Electricity Can a Human Generate?” https://www.pedalpc.com/blog/how-much-electricity-can-human-....

[andreareina]

I guesstimate my 100k cycle place to be about 80w so that tracks. At the end I'm about ready to devour anything and everything that's put in front of me.

[simne]

"The Gossamer Albatross is a human-powered aircraft built by American aeronautical engineer Dr Paul B MacCready's company AeroVironment. On June 12, 1979, it completed a successful crossing of the English Channel to win the second Kremer prize worth £100,000 (equivalent to £538,000 in 2021)" ... "In still air, the required power was on the order of 300 W (0.40 hp), though even mild turbulence made this figure rise rapidly"

https://en.wikipedia.org/wiki/MacCready_Gossamer_Albatross