It isn't a question of being tired of having a frail constitution.

Anderson tried to pursue a football career at Accrington Stanley F.C., but was turned down because of his frail constitution.

In addition to sightseeing, the European tour proved to be quite strenuous for his frail constitution.

He was abstemious to a fault; and, overwork of mind and body telling at last on a frail constitution, he died after a short illness.

She has a frail constitution and is often sick.

Perhaps the battle on the planet had taken a toll on her frail human constitution.

In his youth, Green was described as having a frail constitution and a dislike for doing work in his father's bakery.

His labours proved too great for his frail constitution and he was soon carried off by apoplexy.

Henrietta's frail constitution could not withstand the rigours of childbirth, however, and after seven years of marriage she died soon after giving birth to their son, John.

Sora especially has a frail constitution, spending most of the book in and out of a hospital.