I haven't had these symptoms until now, but I infer that because of the long time I've been devoting to the computer in the last few months, I will soon have many of these symptoms. It seems incredible, in my case as a teacher, the hours we can spend sitting. That's why when I can, I walk, even inside the classroom. Moving, walking, standing (if you don't have problems) can be beneficial to your lower extremities. As for the buttocks, it would be interesting to do daily exercises that strengthen and develop that part of your body. Good post, @luces.