don't hold your breath	phrase meaning: "don't expect that a particular good thing will happen"
laboratory	room or building with scientific equipment for doing tests
oceanographer	someone who studies the oceans
conservation	protection of plants and animals
undersea	below the surface of the sea
final frontier	the last place for humans to explore
marine	relating to the sea
freeze-dried	(of food) quickly frozen and dried to preserve it
astronaut	a person who has been trained to travel in space
decompressing	reducing your body pressure after being underwater
tucking into	eat with enjoyment and enthusiasm
greenhouse gas	gas which retains heat in the atmosphere and cause the greenhouse effect
consumption	(here) process of eating or drinking
deforestation	cutting down trees in a large area
fertiliser	a natural or chemical substance that is spread on the land to make plants grow well
appetite	a feeling of wanting or needing something (usually food)
carnivore	person who eats meat
boom	large and sudden increase in business
expertise	high level of skill or knowledge
a helping hand	assistance; help
fluent	(related to speaking) clear, accurate, wide-ranging and confident
face-to-face	communication with another person directly, in the same place
pathway	set of actions to follow in order to reach a particular goal
resources	(here) things such as activities, information or videos that can be used to help someone study
grasp	understand something so that you can use or do it properly
native	(here) a person who was born in a particular country
motivation	enthusiasm and interest in doing something
immersed	busy spending a lot of your time doing one thing
experimental drug	medicine which has not been fully tested
mortality rate	proportion of people in a particular group who die
side effects	effects of a particular medicine that are not intended
consent	permission
waiver	formal document in which a person gives up rights to something
liable	legally responsible
dilemma	a situation in which a difficult choice has to be made
napping	sleeping for a short period of time
(to) nod off	to fall asleep
sleeping on the job	sleeping when you should be working
insomniac	a person who has difficulty falling sleep
40 winks	(informal) nap for a short period of time
power-nap	a short sleep that gives you energy
naptivist	a made-up name for someone who actively campaigns for napping at work
attitude	opinion or feeling about something
counter-cultural	opposite to what most people think or do
work ethic	belief about how we should work
slimming	what you do to lose weight and become thinner
calories	units that measure how much energy you get from food
lose the pounds	reduce your weight
guinea pigs	(here) people used in a scientific test to find out the effects of something on them
metabolism	chemical processes in your body, especially those that cause food to be used for energy, growth
diet	(here) an eating plan that helps someone eat less and lose weight
couch potato	person who is not very active and watches lots of television
hibernate	spend the winter sleeping
comfort food	types of food people eat that make them feel happier when they are sad or worried
brainy	(informal) clever, intelligent
rack my brains	think very hard to answer a question or solve a problem
hemisphere	half (of something round in shape)
to navigate	to find your way around a new place, often using a map
multi-tasking	doing several things at the same time
attention span	the maximum amount of time that you can concentrate on one thing
hard wired	designed to work in a particular way which cannot be changed
generalisation	a statement that is often true but based on limited information
residing with	living with
get hitched	(informal) get married
cramped	small and crowded
accommodation	a place to live in
the property ladder	stages in owning a house or flat, starting with a small place and buying bigger and more expensive
environment	(here) the place and the conditions in which someone lives
benefits	positive things you get from a situation
incentive	something that encourages you to do something
virtues	good qualities in a person