Vestibular

https://youtu.be/1dW4RZwy7Sk

Dizzy

http://www.dailymail.co.uk/health/article-2164600/The-dizzy-spells-actually-migraines--headache.html

Led lights cause sleep problems.

http://www.dailymail.co.uk/sciencetech/article-3654275/Are-LED-street-lights-damaging-health-Doctors-warn-bright-lamps-cause-sleep-problems.html

Segmented Sleeping

http://www.dailymail.co.uk/health/article-3642608/Should-sleeping-TWICE-day-Two-shorter-periods-slumber-suit-body-clocks-better-increase-alertness.html

Vestibular Disorders Association

http://vestibular.org/