 One thing is maybe lack of physical activity. Another thing is your mind is in a mental diarrhea. Once it is going like this, what goes on, we have no control. Fear will happen, anxiety will happen, disturbances will happen. Right now society has become the basis of your existence. So you cannot sleep because everybody is running through your mind. Your society is only a consequence. Existence is the basis. You just have to get this back to its natural orientation. Sambhavi Mahamudra is a simple process in that direction.