Because you yourself know you're going to tickle yourself so it's no surprise so you don't feel that tickling sensation
True you can overdose on alcohol
Refers to human development that is meant to involve all the parts of a person.
D) Activity level because the more activity you do, the higher your metabolism which means you lose calories faster which means eventually your consumption of energy a day will increase. Unless you do a lack of exercise in which case you would have a lower consumption of energy without gaining weight when eating.
