Verse 27

प्राणायामचिराभ्यासैर्युक्त्या च गुरुदत्तया ।आसनाशनयोगेन प्राणस्पन्दो निरुद्ध्यते

In plain words

By long practice of prāṇāyāma, by the method given by the guru, and through the discipline of posture and diet, the throb of prāṇa is restrained.