Indeed 213g sounds very high for a 49kg person. That's like what, more than 4g protein per kg or like 2 g protein per lb. I don't think that's needed. I don't know if Chris made a mistake in it, I highly doubt it but I used your stats and it shows the same for an Ectomorph (which is obvious by your weight). If anything, my recommendations might be strange or a little unorthodox, but the minimum I get is 1g of protein per kg of bodyweight, that's if I don't have too much protein foods at home or my circumstances don't allow me to eat a lot of protein. And since my goal is to lose fat I have to eat a bit more protein (& burn more calories of course), so I stick around the 1.2-2.2g / kg bodyweight (0.6-1 g per lb bodyweight, I usually do it 0.8g per lb or something close). So Joker (or Josef), is probably right about the 1.5-2g / kg bodyweight, and as you go up in muscle mass you will need to eat more since the bodyweight won't be the same. Of course if 1.5-2g / kg bodyweight doesn't work and you don't gain any muscle in 2 weeks, you should either eat more in general or eat more protein, but I think it's a good number.