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.
Your blood feeds every cell, tissue, gland, organ, and organ system in your body. Without strong, oxygen-rich blood these systems can become compromised. Get moving. The best way to build oxygen-rich blood is to exercise.