This old lady, I met in the foothills of the Himalayas on a trek in 2013. As I stumbled and sat down exhausted, she jumped up and started dancing in front of me. She explained after her exuberance, that she was 80 years old. it turns out she was almost the exact same age as my father. It must have been the mountain air or lack of it – but this woman seemed incredibly spritely for an octogenarian, dancing around like a young girl.