Steady as she goes! Monday 22nd Oct Day 65

Local pool. 500m. Was really getting into a steady rhythm today, yet it is still exhausting. I find it fascinating that although the process of moving through the water feels so effortless - I'm not aware of any sense of hard work or strain in my arm or leg muscles -it's not like running for a bus - when I get to the end of the pool my heart is hammering and I am gasping  for breath. This must be respiration at work - I just need more oxygen, a lot more oxygen, to get to my muscles to get to the glucose and make energy. (George has spent half an hour trying to get me to understand the difference between breathing and respiration and I think I've got it! I still can't do it adequately.)