Muscle Sensations and Lack of Concentration

You ever hear that saying "If you keep frowning it's going to be stuck on your face" like frozen. I get this sensation in my muscles. if smile really wide I can feel my muscles in my face slowly hesitating to fall back. Similar to the technique where you grab some skin on a dog of their back and if it's slowly goes back they're dehydrated. if any of that makes sense. I'm getting similar sensations but the thing is I am hydrated I constantly drink water. I would say 2 Litres or more water a day. what else I get this sensation where someone is touching my chest like the upper areas close to the collar bone and I hate this sensational a lot. yesterday I put the ice cubes in the refrigerator instead of the freezer. sometimes I have lack of concentration and focusing abilities.