Is it normal for a 5'0ft 12 year old girl to weigh 170lbs?

Well, I'm 12 and I weigh 120. I'm 5'0 tall also, I have A lot if muscle, and I eat healthy and am a hard core exerciser. 120 is a lot for me, but it's mostly muscle, while 170, I don't think you can have that much muscle at 12, maybe eat a little healthier and exercise! I'm not trying to be mean, but that's all I know to tell you, I don't know what you look like, so I'm not sure