I started getting the scratchy throat like I always do when I get a cold. I continued to pull for 20 minutes a day and zapped with the cheap zapper one time. I don't think the zapper helped that much as it hadn't in the past, but I really think the pulling has helped. My cold went to my nose as it always does, but I was able to breath all day, blew my nose about twice a day, slept well, coughed mildly for a day, and that was it. I just can't believe it.