This was a custom request that I did. I was told to walk around and with no prep to let my heart rate go down or take lots of deep breaths to load up with oxygen but, to just sit and start holding my breath until I get to 10 minutes.  It was much much harder than I expected as you will see my struggle to keep going and my stomach and body contractions are trying to make me to breathe. I was allowed to take a single exhale and breath when I needed but then I had to continue holding as long as I can and repeat this until I got to 10 minutes.