Am I understanding this right?

1. rocking the bike does help generate more speed, but it is less efficent.
2. It is less efficent for two reasons,
A. your using additional arm muscles to generate the back and forth movement. which means your wasting energy, because this back and forth movement has no down force. and it is the down force that propels the bike.
B. the side to side motion generates ALOT of friction on the tires. this i because you are riding the bike on an angle. If you dont beleve me try holding your bike sideways for a few seconds the next time you ride, and see if you dont eithier start slowing down, or even here the tires rubbing against the ground. This friction creates alot of drag, thus reducing your overall gain even further.
3. Personally, I have been able to sprint at very high speeds, without rocking my bike. I still use alot of arms to keep the bike stable while standing. but I am concentrating all my power too my legs.


I am still pretty new to road bikes so can someone please correct me if I am wrong.