Answer:
Physical
A condition in which the body has a mental need for a drug is a psychological dependence.
It can. Each person is different.
Probably because he stopped exercising
It's a common mistake that people do in their diet plan. Exercise burn calories, so if someone suddenly stop his/her exercise without lowering their calories intake, they will gain weight. The key for a good body is watching your calories and nutrients intake. If you don't want to get fat without exercising, then simply dont eat too much
smoking, alcohol usage, sexual activity, self violence, violence, and trying to kill themselves