It says I have too many verbs, like 'is' and 'was' and 'be.'

I am not going to come up with new clever ways to say 'is', 'was' and 'be' with everysentence. It's just confusing.

Then again, I'm not a writer

You must not repeat a lot of words. I think that's what it is looking for

mine needs toning

I have flabby levels of 'there', 'that'.

I have heart attack verbs

your heart attack verbs have never phased me!

Mine needs toning, but it's more toward fitness than flabbiness

(I used academic writing from last semester, not fiction)