whats the most hardcore supplement promoting gains in muscle MASS? i have a 4 and a half year 'hardcore/intense' weightlifting experience so i know the basics already


yes i know eating right and proten is all anybody needs but...


everything aside, all healthyness and all obvious weightlifting tips like the two i stated above; what is THE BEST supplement helping promote heavy gains in muscle mass


and not a steroid =]


does anything like that even exist? im just curious honestly because my freind will give me half the price of the supplement if i buy something in this criteria