Also why do you get low blood pressure and how can you get high blood pressure. Seriously, I’m so tired of getting blackouts whenever I stand up, any advice?

One of the reasons you may be having blackouts when you stand is a matter of gravity. Your heart has to suddenly pump blood uphill. The sudden extra pressure required causes a momentary decrease in blood flow to the brain. If you are not careful you may be picking yourself up off the floor later. A lower blood pressure may be more beneficial for you and your internal organs. The heart also has to work less to supply adequate amount of blood. Athletes normally have a lower blood pressure. Higher blood pressure can be can lead to heart attack or stroke. If you are constantly having dizzy spells or near fainting when you suddenly stand up, there may be something more serious going on. Check with your doctor for a checkup. Rather safe than sorry. Here is a web page that may give some information. Hope this helps.