It is good for health ________ us to get up early.
a. for
b. of
Someone posted this question in our Q/A board (we are non native). We don't know which answer is correct. I think the answer is 'of' but others say the answer is 'for'. What is the answer in this sentence?
It will be easy if the sentences are the following:
It is good for us to get up early.
It is good for health to get up early.
It is good for our health to get up early.
But this sentence has both 'us' and 'health'.
I think 'for health for us (double for)' sounds somewhat awkward to me. So I think the anwer is 'of' (for health of us) but someone says if you use 'of' the sentence should have 'the' (for the health of us). Is 'the' necessary if I use 'of'?
So what is the answer? (He had originally posted this question and already chose the answer as 'for', but I still wonder if the answer is 'of'. Am I wrong?