Protein smoothies are a staple in our house where everyone works out. We had been using a high-powered smoothie but it almost always woke somebody up in the morning. Sometimes I would even have to bring it into our basement because of the noise. I'm so glad we found this blender, though! It really is quiet! It's no louder than the dishwasher running, so it doesn't wake anyone up in the morning. I hope it lasts us a long time, but I know it will because it's Black and Decker!