Throw a fight and have sleepless night? (4,5)

I believe the answer is:

toss about

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'have sleepless night?' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'throw a fight' is the wordplay.
'throw' becomes 'toss' (tossing is a kind of throwing).
'fight' becomes 'bout' (as in a bout in boxing).
'toss'+'a'+'bout'='TOSS ABOUT'

'and' acts as a link.

Can you help me to learn more?

(Another definition for toss about that I've seen is " spend night worrying?".)

I've seen this clue in The Globe and Mail.

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