Vibrating during meditations.

 Q #307: I have been studying A Course in Miracles for over a year now. For the last few months, I have been having this strange and wonderful feeling -- my body starts physically vibrating during my morning and night meditations. I feel like something inside me is about to take off, like an airplane, a kind of inner weightlessness. After my meditation, I feel great and full of energy. But sometime this feeling that I am experiencing makes me think and think again. I wonder if other students are or have experienced the same thing I am. I also wonder if it is okay to feel that way.