“I chastise my body and bring it into subjection” (1 Cor 9:27). If the body is not mortified, it is very difficult to make it obedient to the law of God… At least bear patiently with the discomforts and fatigue resulting from your bodily condition; try not to complain of the inclemency of the weather and the excessive heat and cold. If you are unable to practise works of penance, at least abstain occasionally from some lawful pleasure.
Saint Alphonsus Liguori