Starting to get into cycling again, this time in a much more serious manner than the cruising around the neighborhood I previously did. Reading about cadence and aerobic vs anaerobic, I now shift down before hills and spin up them. HOWEVER, is this supposed to make me tremendously slow? As in a depressing drop from the flats before? If I am in fact doing this right, as I build up to higher gears on higher grades, how do I keep myself motivated as I spin in a manner that makes me think it would be faster to walk the hill?