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 it has had a positive effect.
Hope this helps.
The answer is HIV. Hiv or human immunodeficiency is a virus that can weaken the body's immune system. Infection with HIV causes a life-threatening illness called AIDS also as immunodeficiency syndrome.
A lot of caffeine if you don't wanna ruin your lungs, vaping and smoking are stress relievers and I heard that it helps with homework but since I'm a xc runner that wouldn't be very good on my lungs and I don't recommend it.
