My body loves this pillow. I've been using this pillow for a couple of weeks. I couldn't tell at first if I liked it. I was in pain after waking up the first week. When I laid on my side, it was awkward. I couldn't figure out if I was doing something wrong.The seller sent a note with some tips. One was "In the early stage of use, you may feel pain and discomfort because the memory foam pillow has the function of adjusting your sleeping posture. After one to two weeks, your head, neck, and back will slowly align to the correct position, and the discomfort will slowly recede. Please be patient and hold on for a while"So, I kept using it. After about 10 days I noticed I didn't wake up with pain. I'm not sure exactly when it stopped. The pain went down a little bit each day until there was none. I also noticed over the next couple of nights that I could switch my sleeping on my back to side with no problem. It didn't feel awkward anymore. It was so good that I wanted to let my husband try it. My neck was sore without it. The pain was worse than when I first switched to using the new pillow. As I pulled the pillow back to my side of the bed, I told him I'd order another one if he wanted to keep trying it out.