Sirach 31: 19-22 How ample a little is for a well-disciplined man! He does not breathe heavily upon his bed.  Healthy sleep depends on moderate eating; he rises early, and feels fit. The distress of sleeplessness and of nausea and colic are with the glutton.  If you are overstuffed with food, get up in the middle of the meal, and you will have relief.  Listen to me, my son, and do not disregard me, and in the end you will appreciate my words. In all your work be industrious, and no sickness will overtake you.
1 Corinthians 9: 24-27 Do you not know that in a race all the runners compete, but only one receives the prize? So run that you may obtain it.  Every athlete exercises self-control in all things. They do it to receive a perishable wreath, but we an imperishable.  Well, I do not run aimlessly, I do not box as one beating the air;  but I pommel my body and subdue it, lest after preaching to others I myself should be disqualified
Philippians 3: 17-19 Brethren, join in imitating me, and mark those who so live as you have an example in us.  For many, of whom I have often told you and now tell you even with tears, live as enemies of the cross of Christ.  Their end is destruction, their god is the belly, and they glory in their shame, with minds set on earthly things.