I tried exercising, cold and hot packs, yawning, head punching, and quit smoking, with no results. What seems to be working is the knowledge that they will end and calm music playing all night. As soon as I feel one coming I sit up and rock back and forth concentrating only on the music. Youtube relaxdaily , He put together a relaxing 9 hour vid that I can play all night. This music thing took a lot of practice but seems to be working, kinda like a miracle. I only get CH's now during extreme low barometric weather events.