I think 60 is the point when you realize you are actually starting to get old. You begin to realize that you really can't do the things you used to do. And the things you still do - you do slower and for not as long. Your hair is grey or starts falling out quite noticeably. Your body actually hurts just getting up in the morning. You go to bed earlier. Maybe you fall down because your balance wasn't as good anymore. Possibly a friend or peer dies from a heat attack. A Grandchild or two happens. AARP, (American Association of Retired People), starts sending you letters.

You are now truly and officially old.