I can feel strong energy come from mine. I felt it the moment I opened the package. I have not annointed it with blood or anything and it works perfectly fine. I feel calm and centered when inside it so it is already powerful as it is. When I have mine out my room feels very full and comfortable, when I put it away my room feels empty and light. It should not disrupt your sleep even if you leave it out. I keep mine folded on the foot of my bed or various other places and have no problems. My room does get active when I leave it open on the floor so there is that but putting it in the closet or wherever won’t effect you or disrupt anything. I have a habit of repeating myself trying to explain things sometimes so I will leave it at that lol
You can feel the energy coming off the circle, but how clearly you sense it depends on your ability to feel energies around you and distinguish between different energies. I sleep near mine all the time and it is comfortable and does not disturb sleep at all. I have also activated it with my blood and I feel like it made a significant difference but yes it still works if you don’t trace the letters with your blood.