The big controversial question. In fact, we often eat too little nowadays. Just look at the crappy recommendation of various renowned health organizations for 0,8g Proteins per gram Bodyweight. For my 75kg this would mean a poor 60g of protein. *Sadface* Protein need depends on the basics as weight, height, age, but especially your overall activity levels. Strength athletes have higher demands than endurance athletes and they have higher demands than sedentary people That said I would aim for: