Rear Naked Choke
Every martial art has an idea about how to escape chokes from behind. For the smaller person, the choke from behind is a major worry.
I think it is always good to see what arts do that specialize in these things and the Jujitsu people do this. So have a look and maybe occasionally try these things while under supervision of a knowledgeable teacher for the purposes of correct technique and safety.
I have found that from my own experience that my wrestling skills helped a lot for some situations but when the attack technique was applied by someone who actually was knowledgeable in the military combat way of applying the attacking technique, my defenses did not work.
Different escape strategies against the standing rear choke attack. These Jiu-Jitsu techniques developed by the Gracie family are based on leverage instead of strikes: Technique 1: Attacker leans forward. Technique 2: Attacker stands straight in a neutral position. Technique 3: Attacker pulls back. Technique 4: Attacker takes leg out.