Those who claim they "get by" on very little sleep are likely fooling themselves, but their bodies won't fool them for too long. Eventually, that lack of sleep will show up somewhere in the way they look or feel (or both).
It's pretty amazing what the brain can learn to do, even while we're asleep.The researchers from suggest that the brains of people with sleep apnea are using the negative effects of OSA to learn to breathe more deeply and effectively.
Finding a form of meditation that works for you and leads you to a deep sense of inner peace isn't secondary to solving the world's problems. In fact, it seems to be obviously primary to achieving balance in the outer world.