It is not a matter of red cheeks, red lips and supple knees. It is a temper of the will; a quality of the imagination; a vigor of the emotions; it is a freshness of the deep springs of life. Youth means a temperamental predominance of courage over timidity, of the appetite for adventure over a life of ease. This often exists in a man of fifty, more than in a boy of twenty.
I am not saying renounce sex, I am saying transform it. It need not remain just biological: bring some spirituality to it. While making love, meditate too. While making love, be prayerful. Love should not be just a physical act; pour your soul into it. Osho