เสียงที่ใช้ร่วมกัน

Your body does things every day without you noticing. Right now your brain is filtering out sounds around you so you can focus on this. You’re breathing automatically without thinking about it. And your heart has been beating non-stop your entire life. But here’s the strange part the moment you think about these things you suddenly become aware of them. And now you’re thinking about your breathing. Aren’t you?