제 경험담입니다만, 입닫고 그냥 잘때와 침을 좀 흘리며 잘 때의 피로회복정도가 조금 다르더라구요? 침을 흘리며 자는게 피로회복에 조금 더 도움이 되는것같은데 다른분들은 어떤지 궁금하네요