Talk to your mother and tell her how you feel and what you are going through. You must remember that everyone in the world is going through problems themselves. Life is hard. You have to stay strong. Even through I don't know you, I do know that you are meant for great things in the future. You only get one mom in life! ;) So talk her and tell her what's going on.
Those two are the muscular system and the excretory system because you use your muscles to push up and down and your excretory system produces the sweat you use while doing them
