in General Knowledge, Health Your brain uses 20% of the total oxygen and blood… by Chirag Chauhan May 17, 2018, 8:33 pm 179 Views Your brain uses 20% of the total oxygen and blood in your body. brainHealth Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website By using this form you agree with the storage and handling of your data by this website. *