Ashtangasamgraha 9.18

9.18

tritayaṃ catadupastambhanamāhāraḥ svapno 'brahmacaryaṃ ca |

ebhiryuktiyuktairupastabdhamupastambhaiḥ śarīraṃ balavarṇopacayocitamanuvarttate yāvadāyuḥsaṃskāraḥ |

tatra āhāra ukto vakṣyate ca ||

niṣṭhyūtaṃ bahurvarṇaṃ vā yasya māsātsa naśyati ||

kucoruśroṇiśālinyo yauvanoṣṇāṅgayaṣṭayaḥ |

harṣeṇāliṅgane yuktāḥ priyāḥ saṃvāhaneṣu ca ||

harṣaṇāśvāsanotrāsabhayatāḍanatarjanam ||

And the secondary support is threefold: food, sleep, and non-celibacy.
Supported by these secondary supports applied properly, the body, endowed with strength, complexion, and nourishment, persists as long as the lifespan's momentum remains.
Among these, food has been spoken of and will be spoken of further.
Or one whose spit is multicolored perishes after a month.
Women endowed with breasts, thighs, and hips, whose slender limbs are warm with youth, / engaging with joy in embracing and in soothing massage.
Cheering, comforting, alarming, frightening, striking, and threatening.