I've heard before that there's no such thing as a sugar rush. I've been careful to observe my own children's reactions to sugar. My conclusion is that it doesn

I've heard before that there's no such thing as a sugar rush. I've been careful to observe my own children's reactions to sugar. My conclusion is that it doesn't affect their behavior much during the day. However, if they have sugar closer to bedtime, it seems to inhibit their desire to go to bed. They start acting like overtired children which can look similar to a sugar rush. We also don't make it a habit of giving our kids sugar close to bedtime, so there could still be bias because I'm observing situations the kids are staying up late and consuming sugar.