"You breathe and you breathe and you breathe. And then you take a step."

That's how Finbar O'Sullivan, a member of the Rotary Club of Kelowna, British Columbia, Canada, describes climbing to the summit of 23,000-foot Mount Aconcagua in Argentina, the highest peak in the Western Hemisphere. "It was physically brutal -- probably one of the hardest things I think I've ever done."