 Absolutely, absolutely. And that's such a wonderful question. When we think about the brain as we age and we think about thinking and memory skills, we see a few different changes. So beginning when we're 30 and older, we start to see a little bit of a change in our brain that slows down our processing speed. And basically that's just fancy talk for our ability to take in information and then act on it. And that slowly but surely declines over time well into our 80s and 90s.