Why Do I Feel Like Choking While Asleep?

Hi, may I answer your health queries right This is the thirs time in two years now that I am chocking while asleep. I wake up, can't breathe, neither from the mouth or through the nose, I feel like I am dying, the breathing has a very strong rattling noise. It's like my windpipe is locked. It takes a few seconds to get back to an almost normal breath, but I have to punch my thorax. What is that?now ? Please t