Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura did not like his disciples to become very fat in the course of time. He would become very anxious upon seeing his fat disciples becoming bhogīs, or enjoyers of the senses. This attitude is herewith confirmed by Prahlāda Mahārāja, who was surprised to see a saintly person adopting ājagara-vṛtti and becoming very fat. In the material world also, we generally see that when a man who is poor and skinny gradually endeavors to earn money through business or some other means and he then gets the money, he enjoys the senses to his satisfaction. By enjoying the senses one becomes fat. Therefore in spiritual advancement becoming fat is not at all satisfactory.