eli5: Why are babies so fat for the first few months of their lives?

Question

eli5: Why are babies so fat for the first few months of their lives?

In: 78

Answer 1

The fat is not normal fat its brown fat. This kind of fat keeps the baby from freezing from the elements as it’s too tiny to protect itself from them. This type of fat melts away on its own as the baby ages, little to no exercise is needed.