A Survey of Hinduism Quotes

“Fasting, prayama (breath control), japa (repetition of a name of God or a short mantra), and study of scriptures are among the most common practices. At the mels one can observe other varieties of tapas: lying on a bed of thorns or nails, prolonged standing on one leg, lifting one arm for years till it is withered, looking straight into the glaring sun for long hours, and similar sportive feats. Many ascetics keep silent for years. This is one of the most powerful means of storing up spiritual energy.”
― Klaus K. Klostermaier, A Survey of Hinduism