Somehow I managed to pull something between my neck and shoulder in my sleep and I couldn't get to the spot to massage it out. It was very stiff and turning my head was pretty painful. A friend suggested I try her Moji Heat ball and wow, am I glad I did. After a quick minute and 50 seconds in the microwave I sat down on my couch and dropped the ball behind me so it was sitting between my unreachable pain point and the couch. I could immediately feel the heat going into the tight spot and the pain was melting away. I sat there for the next 10 minutes slowly moving it around, massaging it into my shoulder/lower neck area and it felt amazing. This allowed me to target my pain point with heat and pressure, and do it by myself. I was lucky enough to try this before I bought it, but I will definitely be buying myself one. I was definitely impressed with how it was able to maintain this consistent and comfortable hot temperature for so long. And for anyone wondering, the ball gets hot, but not uncomfortably hot. Handling it with my bare hands was not a problem.