I was tired today. I took a nap and started reflecting on what it means to be human as I took deep breaths of air and I started appreciating my ability to breath as I was thinking about Lymph which is the trash-can river water canal fluid system between our cells. So, I was mostly thinking about breathing and asking myself how does the lungs take air in and pass it to the heart. And I start to massage my head with like the muscles around my head or something.