[huggah]

This would be much more interesting if it asked you about symptoms of sleep deficit. E.g., "if you go into a dark room and lie down in the middle of the day, how long will it take you to fall asleep?"

Someone who habitually sleeps 6 hours a night but never feels tired is probably fine. Someone who habitually sleeps 8 hours a night but always feels tired should try sleeping more, and if that doesn't work they should seek advice from a doctor.

I expect there is a large segment of people who suffer from sleep deficit and would be more effective if they slept more, but don't know that it would help them. I don't think this is the correct way to reach such people, or the correct message to give them.