Hi! I have been shaky and trembling inside my self. I am not cold or shivering. I have been trying to avoid caffine drinks after 3:30pm, so I could sleep at night. MY schedule has been off, and am under some stress, but I don t think this would cause this. I am worried about this trembling and don t know what is causing it. I check my blood pressure and though it s somewhat high to a little high, I m not sure if this is the cause. Any suggestions? It makes my legs and knees week. I have had this when I wake up in the morning and throughout day, for about a week now.