Rowing machine (3)
I believe the answer is:
erg
(Other definitions for erg that I've seen before include "Unit of work or energy" , "Unit of work; dunes area" , "Energy expended" , "Amount of work" , "Unit of measurement of work" .)
I believe the answer is:
erg
(Other definitions for erg that I've seen before include "Unit of work or energy" , "Unit of work; dunes area" , "Energy expended" , "Amount of work" , "Unit of measurement of work" .)