PATHOLOGY

Detailed explanation-1: -The low oxygen levels during sleep can make you feel very tired in the morning and will contribute to more restless sleep. When the oxygen levels start to drop, the carbon dioxide levels build up in your blood. This can lead to morning headaches, fatigue and sleepiness during the day.

Detailed explanation-2: -12% of people dream entirely in black and white. Two-thirds of a cat’s life is spent asleep. A giraffe only needs 1.9 hours of sleep a day, whereas a brown bat needs 19.9 hours a day. Humans spend 1/3 of their life sleeping. The record for the longest period without sleep is 11 days. More items •08-May-2019