Girls, all lovelies. There's a question that arose after I got engross…

Girls, all lovelies. There's a question that arose after I got engrossed in videos with pediatric physiotherapists and similar specialists who are experts in the musculoskeletal system. So here's the question... how do you understand the word "to sit down" ? Everyone knows that it's not something you should be doing, but as it turned out, I didn't understand this word correctly. Waiting for your answers, and the continuation will come after, in the next one. Thanks to everyone ?