Share 'Standing split stretches'

So I don't know if this will help anyone but I found a great way to practice my standing split stretches. I used to do it how I was originally taught, with a chair against a wall. I kept having the problem of the chair sliding away when I would lean on it. I now do it in a doorway. I have a wide and a narrow doorway in my apartment, so I use each as I warm up (the narrow doorway of course the har…