The size of milk is easily explainable. I, a 230 lbs powerlifter am roughly five times larger than you at 50 lbs. My body requires more calories, nutrients than

The size of milk is easily explainable. I, a 230 lbs powerlifter am roughly five times larger than you at 50 lbs. My body requires more calories, nutrients than yours does. They can easily see that I am much larger than them, so it makes sense to them. As well as being factual. I say this because my kids used to ask this often.