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ubiquitous - (adj.) existing or being everywhere at the same time
mortality - (n.) the quality or state of being a person or thing that is alive and therefore certain to die
activity - (n.) something that is done as work or for a particular purpose; something that is done for pleasure and that usually involves a group of people
treadmill – (n.) an exercise machine which has a large belt that moves around while a person walks or runs on it
inspire – (v.) to make (someone) want to do something
sedentary – (adj.) doing or involving a lot of sitting; not doing or involving much physical activity
