Oxygen

More important than you'd imagine:

https://www.youtube.com/watch?v=CtfqUtW_8AA

This article confirms the above:

http://www.paulstramer.net/2020/02/all-roads-lead-to-oxygen.html 

 'In 1931 Dr. Warburg won his first Nobel Prize for proving cancer is caused by a lack of oxygen in cells. He stated “The cause of cancer is no longer a mystery, we know it occurs whenever any cell is denied 60% of its oxygen requirements.”'

Up-dates, 1st March, 5G & corona:

 https://www.youtube.com/watch?v=yKakXe4Wm78

And:

https://www.youtube.com/watch?v=kLm31bsZXYI