Re: Wierd problem, hard to explain, what could it be?

Are you doing any type of spiritual practice or meditation? Some people report experiences similar to those you've described when they have awakened particular spiritual energies within them. This can occur spontaneously, as well.

We have a built-in system within our brain that causes a sort of paralysis during certain stages of sleep. It is adaptive and prevents us from acting out our dreams...although in a few people this system malfunctions and they thrash about, sometimes violently. Occasionally, people will awaken in this state or experience it before they enter a true sleep state. However, this state is usually not accompanied by heat sensations. Some energetic phenomenon can include heat and vibrations, though. You might want to do some research on kundalini energy. This might give you some clues about what is going on.