Allow some men to get fit (6)
I believe the answer is:
enable
This might be a double definition.
'allow some men' is the first definition.
'enable' can be an answer for 'allow' (I've seen this in another clue). I'm not sure about the 'some men' bit.
'fit' is the second definition.
(thesaurus)
'to get' is the link.
Can you help me to learn more?
(Other definitions for enable that I've seen before include "Facilitate or make possible" , "Provide with means or opportunity" , "Empower" , "Activate" , "Make possible, give the means to do something" .)