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      08-25-2014, 09:05 AM   #197
pattielipp
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Drives: '08 135i & MR-S
Join Date: Apr 2014
Location: Maryland

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After Working at GNC for many years, The two most popular that we would sell are: C4 and Vault

My personal favorite until my store stopped carrying it and/or was taken off the market was Black Powder.

Any more, I have gotten away from caffeine completely and have been taking GNC Preworkout Amino Complex. Other than that, Some simple Carbs with a high glycemic Index and some sore of Free form Arginine.

http://www.gnc.com/pwr/product-revie...-Servings.html
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