GNC sells a "pre-workout" endurance drink that is suppose to pump you up and help you focus. I assume it's all natural ingrediants. Does anyone know if Nano Vapor from GNC is USTA legal?
http://www.gnc.com/product/index.jsp?productId=3872804
How about Jack 3d from GNC
http://www.gnc.com/product/index.jsp?productId=3946360
Or what about Amplified Endurance Booster?
http://www.gnc.com/product/index.jsp?productId=3999334&kwCatId=
Thanks.
http://www.gnc.com/product/index.jsp?productId=3872804
How about Jack 3d from GNC
http://www.gnc.com/product/index.jsp?productId=3946360
Or what about Amplified Endurance Booster?
http://www.gnc.com/product/index.jsp?productId=3999334&kwCatId=
Thanks.