I thought this was an interesting article:
http://www.stuff.co.nz/auckland/local-news...re-going-strongThree centenarians at the same care home - and they all look in fantastic health and are all able to walk. I know of one with 4 centenarians in the UK, but three of them look extremely frail (perhaps ironically, the one who doesn't is 108 - the others are aged in their early 100s).
Zika Baker in particular looks amazing for being a couple of months short of 104.