Is it OK to not let her cook for me?

My job is quite physically demanding plus I workout out often... so I am always particular about my diet and kind of eat a lot to fuel myself up
But my wife is so sweet that she asks to me just tell me what I want to eat and she will make it for me
I really don't want to bother her cause it's quite tiresome to cook all that and also she has a job too.. so I felt its rude and gently declined.
She went on a weekend trip with her friends today morning and I am here thinking whether she felt bad about it..
Is it OK to not let her cook for me?
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