system
Given the following post, respond as if you're commenting on Reddit:
human
Why does low blood pressure make you shaky?

Everything I can find is just listing shakiness as a symptom of low blood pressure, but what is actually happening at a cellular level that causes your muscles to not work as well?
gpt
There is a lot going on at the cell level. Cells are not getting enough of what they need. Blood is not moving fast enough and the body is being starved. Adrenal glands begin producing more chemicals to try and facilitate the lack of oxygen and nutrients carried by the blood to keep you standing. The kidneys and liver aren't filtering blood properly. The brain begins to reorganize priorities and starts reacting by releasing hormones to start increasing blood pressure. At this point, the calcium and sodium levels in the cells are becoming unbalanced and the neurons that control muscles are either leaking too much calcium and causing tremors and/or the neurons and nerves in the brain and down the spine are not receiving the proper chemical signals and cannot fire muscles properly. Basically, your whole body is not working properly. Its like if you don't put enough fuel in a plane and it starts to go down 30,000 feet in the air. Whats wrong with the plane its going down!? well, there's not enough fuel so everything is shutting down. The engine will likely rattle for a bit and then shut down.