I only tried rowing (on water that is, not Concept II) once in my life, at university. So back then I was young, and pretty fit - played football regularly, squash, went running. I still remember being physically exhausted by it, the hardest thing I ever tried, and I was in a boat with seven others! The thought of rowing the Atlantic single handed, at 73, and doing 50 miles in a day is just mind boggling.