Originally Posted by
LoRoK
When you say a unit of power, does that mean like how much force I put into my pedal stroke?
No, that would be a unit of force. A unit of power is equivalent to a unit of energy over a unit of time. Energy is a quantity and power is a rate. Measuring your power is like measuring the horsepower of an engine in that it represents how much energy you can put out over a certain period of time. It depends on both the force of your pedaling and the rate of pedaling.