Robert Drysdale is easily one of the top grapplers in the world. He’s a multi-time world champion that can teach just as well as he competes which is rare. He has a real knack for simplifying BJJ while still keeping the details that matter.
In this video he is teaching the proper way to finish a north south choke. He makes it very clear how important it is to back up and drop your weight as you attempt the choke.
If you liked this video, you will probably like Drysdale’s no-gi BJJ instructional series. It’s easily in the top five that I have owned:
(This is an affiliate link. If you don’t like the idea of that, search the dvd set on google.)