What organs do stimulants affect?

Most of your body parts are affected by X especially your joints and muscles, drastic weight loss, cuts, bumps and certain bruises that never get to fully heal. The constant scratching marks up your skin leaving scars. Grinding your teeth and clenching your jaw also cracks your teeth and the pain left in your jaw is unbearable. As we all know X impairs your thinking, therefore you begin to run and jump and as you are doing all of that you are bumping into things and falling all over causing all of these injuries.