How much we trouble about our health...

It is remarkable that, however much we trouble about our health, however much care we take of ourselves, whatever wholesome and pleasant food and drink we take, however much we walk in the fresh air, still, notwithstanding all this, in the end we sicken and corrupt; whilst the saints, who despise the flesh, and mortify it by continual abstinence and fasting, by lying on the bare earth, by watchfulness, labours, unceasing prayer, make both their souls and bodies immortal. Our well-fed bodies decay and after death emit an offensive odour, whilst theirs remain fragrant and flourishing both in life and after death. It is a remarkable thing: we, by building up our body, destroy it, whilst they, by destroying theirs, build it up – by caring only for the fragrance of their souls before God, they obtain fragrance of the body also.

St. John of Kronstadt