The estimated daily requirements are set by various nutrition authorities in each country. In the US, the Division of Agriculture (USDA) sets the guidelines for nutrients like protein as well as other greater vitamins and minerals. For most people of usual mass, the protein intake is set at less than 70 grams each day.
Athletes may order quite a bit more than this to confirm muscle repair, increased growth and to defend against the common hardships of energetic training and competing. Yet sports nutrition authorities usually advise no more than about twice the diurnal recommended permission applicable to less active people. Some bodybuilders and weight training athletes have taken this direction for additional protein to unusual limits and well beyond any systematic recommendation. While immoderate protein seems to do no injury in healthy, dynamic people up to a point, the risk may be more material for someone with kidney disease the overweight or diabetic for example.
Excess protein beyond the requirements of the corpse is fragmented down from amino acids into ketones or glucose or vitality round intermediates for energy, and some is converted to ammonia then urea and excreted. The position is encouraged by the extraordinary vigor of the powdered protein addition industry in the heaviness training and bodybuilding markets. Skim milk powder can supply all the additional protein required and at a fraction of the cost of some expensive supplement brands.