I'll let someone who knows the science chime in but I can tell you from experience that in my case muscle size equaled muscle strength while on IGF-1. I probably did 80% of my shots in my delts and they got much stronger as well as being more defined and bigger...
I'll let someone who knows the science chime in but I can tell you from experience that in my case muscle size equaled muscle strength while on IGF-1. I probably did 80% of my shots in my delts and they got much stronger as well as being more defined and bigger...
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