What lack of sleep does to the teenage brain - Wendy Troxel

As an adverb at a C2 level, it denotes presence, availability, or existence within a specific vicinity or context. It is also used to indicate approximate values or to describe movement or positioning that encircles a point or lacks a specific direction.

To rest your body and mind by closing your eyes and becoming unconscious for a period of time. This natural state allows the body to recover and maintain health.

A male child or man in relation to his parents. It is a fundamental kinship term used to describe a direct male descendant in a family.

The word 'times' is used as a preposition or adverb to indicate multiplication. It is also used as a noun to refer to a specific instance or occasion. When used for multiplication, it expresses how many multiples of a number are being calculated.