Hello, today i had a presentation to do at school it was to repeat science experiment, and mine was that one to lift an ice cube with string and I prepared for it so much at home it was normal. but when it was time for me to do it at school I failed because I couldn't even place the string on the ice cube thats because my hands started shaking so bad that pupils were looking at me and saying( hey look she's shaking) please help me with this problem. P.s, I also start feeling like my legs are tired or.... i can't even feel them and even my lips tart shaking. Thank you.