Yup, yup, yup. What others have said.
Remove the word "tone" from your vocab and think in terms of building strength and muscle. Toning as such is a myth.
Also keep in mind that you really need to work your whole body - even though you want to see results on your arms and abs, it's all interconnected. I third, forth, whatever the advice to find a trainer to help you build a routine that works your whole body over the course of a weeks worth of workouts.
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