This feature is part of a National Post series by health reporter Sharon Kirkey on what is keeping us up at night. In the series, Kirkey talks to sleep scientists and brain researchers to explore our ...

I can't breathe. There's a tremendous pressure in my chest. I'm panicking, and then I realize I can't move. I try to scream. Suddenly, violently, I'm startled awake, sweaty, shaking, and disoriented.

This post is written by Netra Kothari, Human Resource Intern, Monk Prayogshala, Mumbai, India. You’re asleep — at least, you thought you were. You’re in the dark in your bedroom and unexpectedly feel ...