70's the new 45. When I was young, retired people looked, thought and acted old, but now retiring in one's mid-60s, we've got up to half of one's life to that point ahead of us, so may as well think young! I always thought of myself as 45 going on 16, till I had a nasty fall and it triggered a number of health issues which made me aware of Anno Domini creeping on. But I'm lucky in that I look younger than my age, although MIL, at 84, has lovely skin, dark hair (albeit not altogether her own colour!), still independent, driving, living alone in her own house - dead envious!