Sleep is one method to get fresh for the most part (5)
I believe the answer is:
wayne
'sleep' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I don't see?
'one method to get fresh for the most part' is the wordplay.
'one method' becomes 'way' (I've seen this before).
'to get' is a charade indicator (letters next to each other).
'fresh' becomes 'new' (synonyms).
'for the most part' means to remove the last letter.
'new' with its final letter taken off is 'ne'.
'way'+'ne'='WAYNE'
'is' is the link.
Can you help me to learn more?
(Other definitions for wayne that I've seen before include "John ....., later hero of western films" , "- - Rooney, footballer" , "Batman was Bruce -" , "John, for example" , "John --, film star" .)