About 86 I personally would call elderly, only because at 70 I have been caring for my grandkid. Now aged 13 with autism, he's lived with us for 10 years now, I also work 2 mornings a week in a charity shop, because I'm busy I don't think of aging, I have friends in their 80s who are still very active, one lady learnt to swim at 80, I first met her at the swimming pool I go to 3 time a week, and one good friend leads mountain walks and she now 78, I do have HCM and am careful not to exert myself too much but then that didn't stop me doing all I can, I enjoy going for coffee etc and my friends are positive ladies in their 60s upwards, I don't surround myself with gossips and negative people, I think looking at my friends it's a mind thing, when I lived in the UK I had an acquaintance at church that always needed help sometimes crossing the road just little things that made me think she was a lot older than she was, I found out she was one year older than me, and that was 20 years ago, I get poorly and that leaves me weak but I never think that's because I'm old