Remembering your dreams means you are waking up during REM sleep. It's good old MTBI disturbed sleep which no one can give an explanation of! If the sleep tremors like the ones you get before you drift off, like a jolt? then they're normal, our dog used twitch in his sleep we used to think he was dreaming of chasing rabbit! They're hypnic jolts. I wonder whether taking some form of muscle relaxant before bed might help. Do you exercise in the day?