If one leg is straight and the second one is bent, chances are pretty high that the straight leg is supporting the body therefore the hip shoots up on that side.
I’m actually really happy that I have posted this short tip because it led me to a bigger realization. But to be honest I don’t know if I should be happy or ashamed. Happy because I know it now and ashamed because it’s such a logical and simple thing and I didn’t know it until now. Things like this just tend to avoid ones attention the most, anyway, without further due..
I have realized that the hip is actually pushed up or dragged down by the knee! If one knee is higher than the second one, the hips has a great chance of being up as well, of course there will be cases when this is not true, but for the most part it works.
Then there was a second realization – the same goes for shoulders and elbows, the elbow either pushes the shoulder up/back or it drags it down/forward.
Don’t believe me? Just stand up and try it yourself, do a few poses, walk, run! If you were struggling with the hip up and down thing, hopefully this little trick should make it a bit easier for you.