Bg. 4.29

अपाने जुह्वति प्राणं प्राणेऽपानं तथापरे ।
प्राणापानगती रुद्ध्वा प्राणायामपरायणाः ।
अपरे नियताहाराः प्राणान्प्राणेषु जुह्वति ॥२९॥

Text

apāne juhvati prāṇaṁ
prāṇe ‘pānaṁ tathāpare
prāṇāpāna-gatī ruddhvā
prāṇāyāma-parāyaṇāḥ
apare niyatāhārāḥ
prāṇān prāṇeṣu juhvati

Synonyms

apāneplugin-autotooltip__small plugin-autotooltip_bigapane

air which acts downward.
—air which acts downward; juhvatiplugin-autotooltip__small plugin-autotooltip_bigjuhvati

execute sacrifice; offers; sacrifice; sacrifices.
—offers; prāṇamplugin-autotooltip__small plugin-autotooltip_bigprāṇam

air which acts outward; and life; life; the life air; the living condition; the ten kinds of air flowing within the body.
—air which acts outward; prāṇeplugin-autotooltip__small plugin-autotooltip_bigprāṇe

in the air going outward; in the life air; life; when the vital force; your life.
—in the air going outward; apānamplugin-autotooltip__small plugin-autotooltip_bigapānam

air going downward; breathing.
—air going downward; tathāplugin-autotooltip__small plugin-autotooltip_bigtatha

so.
—as also; apareplugin-autotooltip__small plugin-autotooltip_bigapare

after his time; and others; anyone else; from his other wife; many other; many others; other enjoyable sense objects; other living entities; other than Lord Brahmā and his associates; others (followers of methods other than devotional service); others (like human beings); others; some; someone; someone else; the other; the others.
—others; prāṇaplugin-autotooltip__small plugin-autotooltip_bigprāṇa

air going outward; air of respiration; for bodily strength or prestige; his life; how the living force is working; incoming breath; life; life air; life airs; life and soul; my heart; my life; my mind; of life; of the life air; of the life force; of the vital air; of the vital organs; outgoing air; the life; the life air (by the //prāṇāyāma// process); the life air; the life airs; the life and soul; the living force; the vital air; to the living force.
—air going outward; apānaplugin-autotooltip__small plugin-autotooltip_bigapana

air going downward; downgoing air.
—air going downward; gatīplugin-autotooltip__small plugin-autotooltip_biggati

admission; advancement; by her movement; destination; entrance; in the progression; movement; movements; moving; result; the course; the destination; ultimate goal; with movements.
—movement; ruddhvāplugin-autotooltip__small plugin-autotooltip_bigruddhvā

checking.
—checking; prāṇāyāmaplugin-autotooltip__small plugin-autotooltip_bigprāṇāyāma

by the practice of regulating the airs within the body; practice by breathing exercise; trance induced by stopping all breathing.
—trance induced by stopping all breathing; parāyaṇāḥplugin-autotooltip__small plugin-autotooltip_bigparayanah

always in the ecstatic mood of devotional service; attached to; being so destined; the devotee; the highest resort.
—so inclined; apareplugin-autotooltip__small plugin-autotooltip_bigapare

after his time; and others; anyone else; from his other wife; many other; many others; other enjoyable sense objects; other living entities; other than Lord Brahmā and his associates; others (followers of methods other than devotional service); others (like human beings); others; some; someone; someone else; the other; the others.
—others; niyataplugin-autotooltip__small plugin-autotooltip_bigniyata

controlled; permanent.
—controlled; āhārāḥplugin-autotooltip__small plugin-autotooltip_bigaharah

eating; food for the senses.
—eating; prāṇānplugin-autotooltip__small plugin-autotooltip_bigprāṇān

all kinds of life air; even life; her life; life; life air; life force; life or sons and family; lives; outgoing air; the life air; the senses; their senses.
—outgoing air; prāṇeṣuplugin-autotooltip__small plugin-autotooltip_bigprāṇeṣu

in the outgoing air; in the senses; the life airs, along with the vital force.
—in the outgoing air; juhvatiplugin-autotooltip__small plugin-autotooltip_bigjuhvati

execute sacrifice; offers; sacrifice; sacrifices.
—sacrifices. 

Translation

And there are even others who are inclined to the process of breath restraint to remain in trance, and they practice stopping the movement of the outgoing breath into the incoming, and incoming breath into the outgoing, and thus at last remain in trance, stopping all breathing. Some of them, curtailing the eating process, offer the outgoing breath into itself, as a sacrifice. 

Purport

This system of yoga for controlling the breathing process is called prāṇāyāma, and in the beginning it is practiced in the haṭha-yoga system through different sitting postures. All of these processes are recommended for controlling the senses and for advancement in spiritual realization. This practice involves controlling the air within the body to enable simultaneous passage in opposite directions. The apāna air goes downward, and the prāṇa air goes up. The prāṇāyāma yogī practices breathing the opposite way until the currents are neutralized into pūraka, equilibrium. Similarly, when the exhaled breathing is offered to inhaled breathing, it is called recaka. When both air currents are completely stopped, it is called kumbhaka-yoga. By practice of kumbhaka-yoga, the yogīs increase the duration of life by many, many years. A Kṛṣṇa conscious person, however, being always situated in the transcendental loving service of the Lord, automatically becomes the controller of the senses. His senses, being always engaged in the service of Kṛṣṇa, have no chance of becoming otherwise engaged. So at the end of life, he is naturally transferred to the transcendental plane of Lord Kṛṣṇa; consequently he makes no attempt to increase his longevity. He is at once raised to the platform of liberation. A Kṛṣṇa conscious person begins from the transcendental stage, and he is constantly in that consciousness. Therefore, there is no falling down, and ultimately he enters into the abode of the Lord without delay. The practice of reduced eating is automatically done when one eats only Kṛṣṇa prasādam, or food which is offered first to the Lord. Reducing the eating process is very helpful in the matter of sense control. And without sense control there is no possibility of getting out of the material entanglement.