風(ふ)呂(ろ) furoに ni入(はい)っ()た() haittaので node気(き)分(ぶん) kibunが gaいっそう issou良(よ)く() yokuなった natta。 Taking a bath made me feel even better. Literal Bath [target-に] entered so feeling [subject-が] even-more good became. 風呂に入ったので explains the cause: 'because I took a bath.' いっそう良くなった means 'became even better.' いっそう is a literary/formal synonym of もっと (more). bathing~ので (because)
風(ふ)呂(ろ) furoに ni入(はい)っ()た() haittaので node気(き)分(ぶん) kibunが gaいっそう issou良(よ)く() yokuなった natta。 Taking a bath made me feel even better. Literal Bath [target-に] entered so feeling [subject-が] even-more good became. 風呂に入ったので explains the cause: 'because I took a bath.' いっそう良くなった means 'became even better.' いっそう is a literary/formal synonym of もっと (more). bathing~ので (because)