If you're watching the tour, notice how on many climbs, riders try to get away from Wiggins by standing and accelerating.
And Wiggins eventually catches up to them by keeping a good tempo while sitting, rarely standing out of the saddle. Seems to work well for him!
Yeah - I was noticing that: does he ever stand? Obviously standing works well for some, Armstrong, Contador, etc.
I do a bit of both, mostly to use different muscles and give the butt a break. It also helps to get you over smaller rollers, etc., without shifting down.
Sarah
When it's easy, ride hard; when it's hard, ride easy.
2011 Volagi Liscio
2010 Pegoretti Love #3 "Manovelo"
2011 Mercian Vincitore Special
2003 Eddy Merckx Team SC - stolen
2001 Colnago Ovalmaster Stars and Stripes