My name is Shaun and I'm a respiratory physiologist at the Royal Infirmary of Edinburgh.
"Ok, big breath in and blow fast. Keep going, keep going, keep going...".
We do a variety of different tests, depending on what the doctors have asked for - lung capacity measurements, sometimes it's exercise testing, sometimes it's gas transfer, sometimes it's total lung capacity.
So, we use lots of different equipment, from spirometers, which are simple volume measuring devices, to more complex pieces of equipment that involve gas analysis and use of gas cylinders, to exercise equipment - exercise bikes [and] body plethysmographs.
You have to have an interest in physiology and science, I would say, and an interest in working with people, because that's quite important. It's not something we're just doing to the patients, the patients are heavily involved in the results we get.
I think the NHS is a great place for me to work because [there are] lots of different things that are going on and you have access to a lot of different types of tests. You can contribute to a doctor's research or you can even come up with your own research projects. So, [there are] always opportunities to develop professionally and that's what I like most about the job.