I feel exactly opposite, I watch people sitting hills and cringe, standing is just like walking up a steep hill or stairs, a natural position, no unnatural stresses on the knees, sitting... now you're torquing the knees unnaturally, and the hips, when I watch Lance(?) or Alberto on a hill, standing and either keeping tempo or attacking I see balance and strength. Not trying to start an argument, just offering a different view, imho, the two types of riders are~ sit on hills vs stand on hills