A lot of parents refrain from giving their kids too much candy, convinced it will make them hyper and out-of-control. It turns out, however, there is no truth to the idea that sugar causes hyperactivity in kids. One study published in The New England Journal of Medicine found that “most controlled studies have not found consistent adverse effects” when sugar or aspartame was given to children. The next time your kid asks for a piece of candy before bedtime, you won’t be able to argue that it will keep them awake!