Vocabulary

• wake up: To stop sleeping
• have to: Must do
• hit the ceiling: To become very angry; to lose one's temper.
• check out
• get out of: To leave or escape responsibilities, troubles
• turn on
• mess with: To interfere with or tamper with something.
• at night: During the night; in the nighttime.
• drop into: To visit someone or some place casually and often briefly.
• requires effort: To need or demand effort to achieve something.
• take down: To capture physically
• throw off: To put out (heat, smell etc.); emit
• used to: Did regularly before, but don't do now
• up till: Until a particular time or point.
• grab: To take and hold something quickly
• routine: Happening or done regularly or habitually
• surge: Sudden movement in one direction by many
• mess: Something that is untidy, dirty or unclean
• describe: To tell the appearance, sound, smell of something
• hormone: Chemical produced by the body to control functions
• increase: To make or become larger in size or amount
• guilty: Responsible for doing something wrong
• affect: To cause a change in something else
• brain: To strike someone forcefully on the head
• occur: To come to pass or to happen
• gradually: Occurring in a slow manner over a period of time
• suffer: To experience pain, illness, or injury
• snooze: A short light sleep; nap
• cause: Belief, goal or organization that people support
• perform: To carry out an action well or successfully
• require: To demand that someone does something
• form: Sports team or person's current winning record
• population: Number of people who live in a country, area etc.
• reaction: Bodily response to a drug or something eaten
• interrupt: To stop something from happening for a while
• impair: To damage or weaken something
• scientific: Concerning academic study of the physical world
• melatonin: Hormone secreted by the pineal gland
• volume: Number or amount of something e.g. sales
• temporary: Continuing for a limited time; not permanent
• transition: Change from one state, movement, place to another
• persist: To continue a course of action despite opposition
• wanna: Shortened form of 'want to'. Used only in speaking
• reduce: To try to decrease, e.g. your weight if overweight
• produce: Fresh foods such as fruits and vegetables
• inertia: Lack of movement or activity
• stage: To organize an event to gain public interest
• trace: To make an outline to determine a shape
• activity: An action or task, e.g. sports, washing clothes
• rapid: Moving or happening very quickly
• hit: To have a negative impact on a person/place/thing
• alertness: State of being aware and able to respond quickly
• retina: Part of the eye that senses light
• float: To sell the shares of a company publicly
• blackout: When the electric power is off; outage
• set: Prepared for something; ready
• deep: Complex and important
• nucleus: Center of an atom
• part: Division of a book
• abnormal: Not normal, not typical, not usual, not regular
• tablet: Small hand-held computer with a touch screen
• train: Line of people, animals moving the same direction
• check: Paper showing how much you owe at a restaurant
• light: To cause something to burn; put a burning match to
• flinch: To move back as in fear or pain; recoil; shrink
• owl: Bird with large eyes that hunts at night
• mid: At (or near) the middle point
• delta: Area where a river spreads and empties into a sea
• theta: 8th letter of the Greek alphabet