For example: if ((wet && cold) || (poor && hungry)) { System.out.println(I'm miserable!); The println statement will be executed if wet and cold are both true, or if poor and hungry are both true.
Smoking causes depression because of the withdrawal from a physically and psychologically addictive substance, called nicotine. Nicotine which acts as a receptor for the neurotransmitter, acetylcholine, indirectly stimulates the release of another neurotransmitter, dopamine, in the brainâs reward or motivation center.
Some studies, though, suggest it may just be the ritual of smoking that induces a calming effect, because nicotine is actually considered a stimulant, not a depressant. When you first inhale, nicotine causes your body to release the hormone epinephrine, which is the fight or flight hormone. Epinephrine activates the sympathetic nervous system, making your breathing become rapid and shallow, your heart rate increase, and your blood pressure rise.