I have had the bed spins before when i was drunk but the other night i was lying in bed on my back not moving and focusing on my breathing. I would count as i breathed in and out and i decided to hold my breath and i could hear and feel my heart slow down and quiet then as it felt like it stopped it began to start up again slow at first then faster and louder until i finally released my breath and breathed in and it felt like the bed started spinning to the right and would do like a half spin and start over again very quickly it lasted like 10 seconds. It felt really cool and i was just wondering if anyone else has ever experienced this.