Is 40 'ready for the knacker's yard' (old)?

On any article or video the golden starting point for any advice for aging people seems to be 40.

So what do you reckon?

At 40, do I have one foot in the grave?

Personally, I feel fitter and healthier in my 40s than I did in my 20s. I think I'm pretty cool and youthful looking, also. Most of the frequent seasonal illnesses don't happen any more. All of my little bodily niggles have pretty much melted away.

I still have 11% body fat.

Or our standards for aging so low, as we don't know how to age in the West without falling apart by the age of 30?

And how do you feel for your age?

https://idioms.thefreedictionary.com/ready+for+the+knacker%27s+yard

You're old
You're still cool and happening
I'm undecided.
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Is 40 'ready for the knacker's yard' (old)?
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