It’s an age-old question: how much protein do you need for maintaining good health in general, and building muscle in particular? The answers to this question are varied and downright confusing. You’ll find recommendations that range from .36 grams of protein per pound (.8 grams of protein per kilog...
Stuart Phillips recommends at least .54 grams of protein per pound (1.2 grams per kilogram) of body weight. If you’re a physically active older adult, you should probably be consuming .72 to 1 grams of protein per pound (1.6 to 2.2 grams per kilogram) of body weight, depending on your physical activity level.
Why on Earth would someone mix their systems like that (metric and imperial)? I suppose they might work for NASA and want to lose another robotic space probe (Mars Climate Orbiter).