This episode has been produced with the support of XDEEP and the patrons of Speaking Sidemount. Huge thanks to both for their support.   In this episode, I catch up with fellow Kiwi and world-renowned Hyperbaric Physician, Prof Simon Mitchell.   In this, the first of two special episodes with Simon, we discuss his background and how he got into diving medicine, how his service in the Royal New Zealand Navy shaped his career, we reminisce on our military service and then draw a line under the stellar work that Simon has done in synthesising the research and evidence on Deep Stops before we get into other factors that might influence our decompression including PFOs, dehydration, diver temperature, working at depth, and light physical activity while decompressing. Simon is an amazing technical diver in his own right and has a great talent for explaining complex topics in a way that can be easily understood and applied to our diving.   Enjoy Steve