"As a former age-group swimmer, I found swimming later in life boring and monotonous. It was hard to get motivated to practice. Amazingly, you have made swimming interesting for me again. I am now eager to get into the water and work at it. You have given me a completely fresh way to think about technique and efficiency, and I have been able to incorporate new things into my swimming even at this stage. I think it’s really true that you can teach an old dog new tricks!" - Kim (a self-described "plain ole sprint/Olympic age grouper of ever-increasing age").