I weigh around 245, eat 300 grams on average daily. I drink a lot of water. I can tell the difference when I am eating a lot of protein and when im not. You can actually feel it. I am stronger than the avg. gym goer which I contribute to workouts of less than 1 hour and only 3x week. Not a bodybuilder so I can't relate to that but I def. am stronger with it.
These vids are from Milos Sarcev seminar"Secret of the Pro's" on Nutrition should clarify alot of stuff for everyone.He goes into great detail on Nutrition,hope this helps.
yes it is right your body will use the exact protein it needs to repair damaged muscle fibers and all the rest your body will store it for energy in other words it will turn into fat! i usually consume no more than 60g per meal
It is lost in urine and contributes to calories and under the right conditions (taking in excess calories) gain of bodyfat. Some basic biochemistry:
Protein is digested by endo and exopeptidases to give amino acids and small peptides. All of these can be absorbed through the wall of the intestine into the blood. Excess amino acids are deaminated in the liver. One product of this is urea which the kidneys remove from the blood and put into the urine. The carbon skeleton that remains can be metabolised and used in respiration, to replenish glycogen stores and stored as fat.
This process happens all of the time so protein intake contributes to your calorific intake when you take in more than your body requires. You will not seriously stress your liver before you gain fat due to this as following deamination the carbon skeletons remaining can be stored if not needed for respiration or to replenish glycogen stores.
If anybody has references showing liver stress due to high protein intake I would like to see them as I am not aware of them. I mean genuine stress not up regulation of genes for the enzymes involved in deamination or associated reactions.
I am far from an expert on this, but I think that just about every nutritionist out there will tell you that excess protein is eventually converted to mostly fat.