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  1. Is IGF-1 good for cardio and endourance as well?

    Is IGF-1 good for cardio and endourance as well? Also how much does it help to burn fat? I am looking for an competative supplement that will help me gain a lot of muscular endourance and maybe burn a little fat off. Is IGF-1 right for me? Also, does IGF-1 show up on drug or steroid tests...
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