how do you explain that complete newbies who have no idea what a diet is and who eat maybe 30 to 50 grams of proteins a day build muscles just doing some biceps curls and bench press then 
that is physiologically impossible to gain muscle eatign that...
boonstack !!!
let me explain
science says, rda says, a certain protein intake. about .65 g per kilo? i believe. and , in people who weight train, its actually lower. only about .5 g per kilo. and this is based onscience.
totally true.
but what are they saying ? they are saying that is the amount fo protein necessary per day in order to keep a nuetral nitrogen balance.
nitrogen balance is a key indicator of msucle gorwth or msucle loss. the scientists recommend that amount of protein per day in order to avoid muscle loss in sedentray individuals, beause that process is very unhealthy and might even lead to death- over time. its malnutitrition.
no, how does one gain extra muscle? they need to have a positive nitrogen blance.
there is you first step in understanding high protein intake for gaining mass.