change of air for health; climatic treatment
A yojijukugo referring to traveling to a different climate to improve one's health, often for chronic conditions like tuberculosis in historical contexts, but still used for general recuperation.
The doctor recommended a change of air for his health.
祖母は昔、結核の転地療養で軽井沢に行ったそうだ。
I heard that my grandmother went to Karuizawa for climatic treatment of tuberculosis long ago.