Distant relatives having last word about exercising (3-3)

I believe the answer is:

ape-men

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'distant relatives' is the definition.
The definition suggests a plural noun which matches the answer.

'last word about exercising' is the wordplay.
'last word' becomes 'amen' (last word in a prayer).
'about' means one lot of letters goes inside another.
'exercising' becomes 'pe' (abbreviation for Physical Education).
'amen' going around 'pe' is 'APE-MEN'.

'having' acts as a link.

Can you help me to learn more?

(Other definitions for ape-men that I've seen before include "Description of Tarzans" , "Extinct primates" , "Extinct human ancestors" , "Early humans" , "Multiple Tarzans" .)

I've seen this clue in The Guardian.

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