I'd agree, I haven't given much thought to where the extra energy comes from.
Where does any energy come from? I guess mostly sugar and fat, ignoring for the moment creatine phosphate, protein, and alcohol.
If these cyclists are sustaining a higher power level, I guess they are just burning a little hotter, because they didn't hit their thermal limit before because something else must have limited their sustained power production.
rekrunner, where is the extra energy coming from? You're not thinking, just repeating idiotic dogma. Do you understand what calories are? A unit of measurement of HEAT PRODUCTION. The PED dogma IMPLIES that heat production and dissipation can be increased beyond natural levels, thus circumventing the laws of physics. But everyone stating the PED dogma is completely oblivious to the basic physiology of thermoregulation.
Please address the issue and stop avoiding it.
Watch this video. Please explain to me how turbo chargers do not work? Where is all the extra energy coming from?