Answer:
Internal can be you don't want bad things happening to your body, you don't want drugs affecting your health,etc.External could be you don't want it to affect your family or people around you.For example, like a cigarette if you are smoking in public you can be affecting others passing by or hanging out with you(external)but if it's just you by yourself smoking it is damaging your lungs(internal)
I think their probably stressed out about life.
First comes non-rem sleep, followed by a shorter period of rem sleep, and then the cycle starts over again
Explanation:
Your body needs food to function at its best and to fight the daily stress and fatigue of life. Our energy comes from the foods we eat and the liquids we drink. The three main nutrients used for energy are carbohydrates, protein, and fats, with carbohydrates being the most important source.
