Usually in our adolescence, we are exposed to many sudden and inexplicable mood swings as a result of our body undergoing various hormonal changes that prepare us for adulthood.
Aside from increased social pressures, the onset of menstruation, for example, introduces adolescent girls to premenstrual tension (or premenstrual syndrome) and the menstrual cramps, the former being a mixture of physical and psychological symptoms, including temporary weight gain, fluid retention...