Answer:
D) is the answer because it only allows particular molecules to get in and out
If it is mental stress then yes because the body lets out hormones that make you happy
Some heathy habits should be to:
exercise
eat heathy
have a good diet
<span>Get your Eight Hours a Night
drink water </span>
Examples of sedentary behaviors include watching television, playing video games, using the computer, reading, driving or riding in a car/bus and sitting around talking, eating or drinking.