A stroke occurs when a blood clot blocks a blood vessel or artery, or when a blood vessel breaks and interrupts blood flow to an and bleeding occurs into an area of the brain. Every stroke is different.
ETA Chlorophyll works on the Liver and probably works a little. No it really doesn't, you are not a plant. Tea will oxygenate the blood. No it won't Also don't do as someone else said and drink liquid oxygen, that's really not a good idea.
The purpose of an oxygen bar is to increase the oxygen level in ones blood to above 99% from possibly 96% or 94% If a person is as low as 86% they may be on oxygen full time. An oxygen bar can increase ones blood oxygen level to max in about 3 or 4 minutes.