My dad's Canadian, not French, read a fucking history book you illiterate.
Explains why you speak like a fuccking lumberjack. Anyway "fatfrenchcanadianfag" just doesn't flow, so we're sticking with FFF.
Certain aminos can't be "manufactured" by the body efficiently, hence supplementing = rasing levels for effect (tryptophan), but who am I talking to, you've never seen the inside of a fucking gym.
The only amino acids required by the human body that cannot be manufactured by the human body are the 8 essential amino acids: phenylalanine, valine, threonine, tryptophan, isoleucine, methionine, leucine, and lysine. Some amino acids are conditionally essential (arginine, cysteine, glycine, glutamine, histidine,tyrosine, and a couple more I can't think of offhand). These can be manufactured by the human body but in certain situations can be deficient. However, ALL of these can be supplied with a diet adequate in complete protein. Supplementation with free-form aminos is a waste of money.
And as for seeing the inside of a gym, are you trying to say being a gym rat makes one an expert in protein metabolism? I know you're smarter than that.