climbing is all mental attitude. I am 230#, live in western PA where we average between 3,000 and 4,500 feet of climbing on the average training ride. I will not profess to be able to hang with the 140# guys but I rather enjoy hanging as long as possible, longer than I am expected to and not being too far behind when we crest the top. Gearing, cadence, seated or standing and all of that is individual. Find your own technique by trying others advice, using what works and throwing out what doesn't... most of all, have fun - that's why we ride in the first place