Rowing, like other endurance based aerobic pursuits (such as swimming,
running, cycling, skating, etc), is naturally smooth and flowing
The WaterRower, like rowing, fatigues the user purely aerobically. Many
other rowing machines imitate the action of rowing, but they do so
mechanically, and often lack the natural dynamics experienced when moving a
boat down the river
The WaterRower responds to the work applied allowing constant effort through
the whole stroke, unlike resistance based machines where effort is high at
the beginning of the stroke and fades as the resistance is overcome