Work efficiency relates to how efficiently power is translated into velocity without excessive metabolic cost or extraneous movement.

“but in order to do so you have to have that interface that basically let's say distinguishes between gross mechanical power and net mechanical power and the interface between gross mechanical power and net mechanical power is only the let's say work efficiency like how efficiently are you working but not metabolizing or or moving because you all in the end you have to take this power and and and and be able to output into into into velocity.”