Prompt: Each day as you play and learn, your brain works hard to process all the new experiences. But this leaves waste chemicals and toxins behind that can damage brain cells if not removed. At night while you sleep, special fluids made by your brain go to work cleaning out these harmful byproducts. They wash away the 'brain trash' so your thoughts and memories stay sharp. That's why sleep is so important for keeping your mind healthy and strong. width:1152 height:896 aspect:4:3 seed:1393864878