꽁머니, 현대인의 정신건강에 미치는 영향
?? ???? ??? ???? ??? ?????, ??? ???? ???? ????? ??? ??? ???? ????. ???? ????? ???? ?? ??? ?? ???? ??? ??? ??? ? ?? ?????. ??? ???? ????? ???? ??? ???? ?????? ??? ???? ???? ??? ? ??? ? ??? ??? ????.
?? ??? ?? ??? ?? ????? ????? ??? ???? ????. ??? ???? ??? ???? ???? ?? ??? ?????? ??? '?? ??'