Masks are sold out in Seattle...
I'm now working on the assumption that I will get exposed and sick within the next 12 weeks. High risk job.
Doing Nitric Oxide dumps from today to adapt to hypoxia. The weights can take a break. I got to buy some more beetroot...
Go cleanshaven if you wind up working in a mask, stubble or a beard stops them sealing.
Clean your hands before you remove/change the mask or a filter.
Hyperventilate to get your oxygen up deep breath in and hold, do the change then a hard breath out to push the external air out of the mask.