Is the Slow Rhythm the Same as You Are Old?

The slow rhythm that you talk about, this er, the slow, undulating, deep, non ram sleep rhythm that ist is so essential to us. Does that stay the same in terms of its frequency as we get older? And does it stay the same throughout other mammals as well? We're starting to now dig into this, and what we're finding is that it does change across the life speni. It doesn't go as slow as it did when you were young, compared to wen you ar old. No, it gets acly fash it goes away from being nice and slow and deep, and it start t become a little more erratic. Even across any one