Originally Posted by
nachomc
Who doesn't? HTFU
Originally Posted by
BillyD
Correct.
And they're not
intentionally swinging the bike back and forth . . . . it's swinging because with each powerful standing leg-thrust the bike wants to veer to that side.
It's the arms & shoulders that must keep the bike from falling over. Then the whole scenario switches to the opposite side of the bike with the opposite leg-thrust.
Yes, it consumes a lot of energy which is why you only stand to sprint when you have to.
They didn't have DVDs in my day, I had to learn this stuff from others.

When I sprint, I'm not using my arms to stabilize the bike....
I actually forcefully push and pull on the bars which in my case transfers more power to the pedals.
When I'm sprinting to close gaps or respond to accelerations in the peloton, I'm in the drops and standing, but I conserve energy (or btter yet my legs) by spinning an easier gear and NOT using my upper body.