Answer:
try and condition before (your not gonna be able to run a 6 minute mile at first) drink alot of water, get sleep, and eat healthy. I am a cross country runner so I should know.
Explanation:
You will die and it will be very painful
Make sure the scene is safe
Answer:
they allow researchers to know how closely the sample resembles the target population. ... As such, researchers know the percentages of the population based on race, gender, age, education, and a whole host of other demographic characteristics.