While children seem to constantly be growing a few inches every month, they actually have periods of each year where they tend to grow more or less. No child grows at a perfectly steady rate throughout the year. On average, a child grows slightly more in the spring than in any other season and slightly less in the winter. It is thought that this is an evolutionary advantage that comes with when food is more and less plentiful. People needed to observe energy in scarce winters and could eat to their heart’s content in the spring, leading to children having excess spring energy.