What Causes Recurrent Body Tremors Upon Waking?

Hello, I have an issue I have been having for over a year now. when I wake up (either in the morning or from a nap), I m very shaky. Not only that, but when I am getting ready in the morning I have tremors where my whole body jerks for a second and I kind of black out a bit. I m not sure if my eyes are closing or what exactly is happening. Sometimes they are just small tremors but other times they are larger. This usually continues throughout the morning for about 45 mins-1 hour, with the tremors getting less severe as it continues. It could be related to anxiety as I often feel very very anxious and nervous about school or work, but I have never been diagnosed with any anxiety disorder so I can t say for sure. Even during the rest of the day, my hands continue to shake even if I m not feeling nervous about anything.