Some people like to go swimming in winter in icy waters. That maybe a little extreme for most people. However what Kathleen is doing maybe a better option. Greeting the winter sunrise totally nude.
Cold is an extremely good way to stimulate circulation, as the blood rushes to the body's extremities to keep it warm. The cold crisp air in bare skin especially when that cool air envelopes your entire body is just exhilarating.
Now it is important not to go too far or expose yourself to the cold for too long, but in short bursts it is just wonderful. When you add in a sublime sunrise over the ocean and Kathleen's nude form to the mix, you get the most perfect start to the day one can have.