Being overweight, I guess, almost leaves me exhausted (8)

I believe the answer is:

fatigues

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'me exhausted' is the definition.
I can't tell whether this defines the answer.

'being overweight i guess almost' is the wordplay.
'being overweight' becomes 'fat' (similar in meaning).
'almost' means to remove the last letter (most of the word but not all of it).
'guess' with its final letter taken off is 'gues'.
'fat'+'i'+'gues'='FATIGUES'

'leaves' is the link.

Can you help me to learn more?

(Other definitions for fatigues that I've seen before include "Forces clothing" , "Military clothing" , "Army gear" , "Military cover" , "Non-military duties of soldiers" .)

I've seen this clue in the Evening Standard.

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