What Losing Sleep Does to Your Mind Approximately 30% of adults in the United States don't get enough sleep at night. Here's a short video explaining what's going on in your brain when that happens. By Mindful Staff January 13, 2016 Calm Groggy, grouchy, or unproductive in the morning? We’ve all been there. But what’s actualUnlock this article for FREE. Keep Reading Log in to your Mindful account for uninterrupted access.