 ፕሮቲን ጡንቻ ዋነኛ ሕንጻ የማገጃ ነው, ስለዚህ በቂ መብላት አይደለም በትክክል እንዲያጡ ጡንቻ ሊያስከትል ይችላል, ይህም እስከ bulking ጀርባ መላው ዓላማ ድል.
Protein is a significant building block of muscle, so not eating enough of it may lead to a muscle, which then defeats the whole reason for bulking up.