Feel gait becoming unsteady? Spend more time outside perhaps (3,1,4)

I believe the answer is:

get a life

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'unsteady? spend more time outside perhaps' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'feel gait becoming' is the wordplay.
'becoming' is an anagram indicator.
'feel'+'gait'='feelgait'
'feelgait' anagrammed gives 'GET A LIFE'.

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I've seen this clue in The Irish Times.

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