Sutrasthana Chapter 3 — Ṛtucaryā Adhyāya (The Seasonal Regimen)

The third chapter of the Sūtrasthāna, the Ṛtucaryā Adhyāya — "the chapter on the seasonal regimen" — sets the daily practice of Chapter 2 inside the larger turning of the year. Where the dinacaryā gives the shape of a single day, the ṛtucaryā shows that the same body is not the same body in every season: its strength, its digestive fire, and its needs all rise and fall with the sun's course. The chapter's governing insight is that to live well one must live in time with the season, adjusting food, activity, warmth, and rest to what the year is doing to the body.

Vāgbhaṭa opens with the framework that organizes the whole teaching. The year is divided into six two-month seasons — late winter (śiśira), spring (vasanta), summer (grīṣma), the rains (varṣā), autumn (śarad), and early winter (hemanta) — and these six are gathered into two great arcs. The northern course (uttarāyaṇa), also called ādāna, "the taking," runs through late winter, spring, and summer; in it the sun and winds grow sharp, hot, and drying, and they draw away (ādatte) human strength day by day. The southern course (dakṣiṇāyana), called visarga, "the giving back," runs through the rains, autumn, and early winter; in it the moon waxes strong, the earth is cooled and moistened, and strength is restored. Bodily strength is therefore greatest in the cold, least in the rains and the high heat, and middling in the seasons between.

From this framework the chapter turns to its first concrete regimen: the conduct for early winter (hemanta). Here the cold seals the body's surface, concentrating the digestive fire inward; well-fed, that fire builds the body, but left without fuel it begins to consume the body's own tissues. The winter regimen answers this directly — nourishing unctuous food of the sweet, sour, and salty tastes; oil massage, kneading, and vigorous movement to generate heat; warm baths and fragrant anointing; warm light coverings, sun, footwear, and charcoal-warmed shelter. Vāgbhaṭa closes by carrying the same regimen into late winter (śiśira), intensified, because the cold is then sharper and a dryness has begun to set in as the depleting ādāna season opens.

The chapter then turns to spring (vasanta). The warmth of the returning sun melts the kapha that the cold months heaped up; left in place it smothers the digestive fire and breeds disease, so the spring regimen begins with its clearing — emesis and the other purifications, light and dry food, exercise and dry-rubbing. With the body cleansed, the chapter opens into the most sensuous passage of the whole ṛtucaryā: fragrant baths and aged grains, mango-scented drinks and the season’s wholesome wines taken among friends, cooling waters and shaded gardens loud with the cuckoo, the midday hours passed in flowering groves. Spring is the one season whose regimen weaves the care of the body together with delight.

A note on this reading. The verses presented here carry the chapter through its seasonal framework, the two cold seasons of early and late winter, and the spring (vasanta) regimen. The regimens for summer, the rains, and autumn, together with the rules for the junctions between seasons (ṛtu-sandhi), continue the same logic and are being prepared; they will be added to this page as they are completed.

The verses move through two structurally distinct movements: the framework that explains the year, and the first of the seasonal regimens it grounds.

1. The framework — the six seasons and the two courses (verses 1–7)

Verse 1 names the six two-month seasons in order. Verses 2–4 identify the northern course (uttarāyaṇa / ādāna) of late winter, spring, and summer — the "taking" arc whose sharp, hot, drying nature wears away the earth's cooling qualities and depletes human strength, and in which the bitter, astringent, and pungent tastes grow strong. Verses 4–6 turn to the southern course (dakṣiṇāyana / visarga) beginning with the rains — the "giving-back" arc in which the moon waxes, the earth is cooled, and the unctuous, sour, salty, and sweet tastes restore the body. Verse 7 maps the resulting curve of strength across the whole year: greatest in the cold, least in the rains and summer heat, middling between.

2. The early-winter (hemanta) and late-winter (śiśira) regimen (verses 7–17)

Verses 7–9 give the physiological ground of the winter regimen: the cold seals the body in, concentrating a powerful digestive fire that, if underfed, turns on the body's own tissues — so one resorts to the sweet, sour, and salty tastes and, waking hungry in the long-nighted dawn, follows the day's regimen as already taught. Verses 10–11 prescribe the body practices: oil massage with vāta-quelling oils, oil on the head, kneading, wrestling, and treading-massage, followed by astringent cleansing, the prescribed bath, anointing with saffron and musk, and the smoke of agarwood. Verses 12–13 give the nourishing winter diet — unctuous broths, nourishing meat, jaggery, wine, and wholesome preparations of wheat, black gram, sugarcane, and milk, with fresh grain, animal fat, oil, and warm washing-water. Verses 14–16 close with the disciplines of warmth: light-but-warm coverings, judicious sun, footwear at all times, the warmth of beloved companions, and charcoal-warmed inner chambers in which "no disorder born of the cold's harshness ever arises." Verse 17 carries the whole regimen into late winter (śiśira), intensified, as the drying ādāna season begins.

3. The spring (vasanta) regimen (verses 18–25)

Verse 18 gives the spring physiology: the kapha accumulated through late winter, melted by the spring sun, strikes down the digestive fire and breeds disease, so it must be cleared without delay. Verse 19 prescribes the clearing — emesis, nasal therapy, light and dry food, exercise, and dry-rubbing to subdue the loosened phlegm. Verse 20 turns to care after cleansing: fragrant bathing and anointing, aged barley and wheat, honey, and lean spit-roasted meat. Verses 21–25 open into the famous spring-recreation passage — mango-scented drinks offered by the beloved, the season’s wholesome fermented wines taken gladly among friends, cooling ginger and honey waters in places cooled by the southern breeze, shaded jewel-paved courtyards ringing with the cuckoo, and the midday passed in fragrant flowering groves. The spring regimen is the one place where Vāgbhaṭa ties the care of the body to delight, presenting the pleasures of the season as part of its medicine.

• The body changes with the season. The same person is strong in one season and depleted in another. Strength, digestive fire, and need are not constants to be managed by a single fixed regimen; they move with the sun's course, and the regimen must move with them.
• The year has two arcs — the taking and the giving-back. The northern course (ādāna) of late winter, spring, and summer draws strength away through sharp, hot, drying force. The southern course (visarga) of the rains, autumn, and early winter restores it through cooling and moistening. Knowing which arc one is in tells one whether to conserve or to build.
• Strength peaks in the cold. Because the cold seals the body's surface and concentrates its fire, early winter is the season of greatest digestive power and bodily strength — and therefore the season in which the heaviest, most building nourishment is both possible and required.
• An unfed fire consumes its own house. The strong winter agni, left without sufficient fuel, does not simply rest — it turns on the body's own tissues. This is why the winter regimen is emphatic about rich, unctuous, sweet-sour-salty nourishment: under-eating in the cold is not lightness but self-depletion.
• Warmth is a whole regimen, not a single act. Oil, movement, bath, fragrance, food, clothing, sun, shelter, and company are all enlisted against the cold. The chapter treats warmth as something built across the whole day and the whole environment, not secured by any one measure.
• The two winters are continuous but not identical. Late winter (śiśira) takes the same regimen as early winter (hemanta), intensified — because the cold is sharper and a new dryness has begun, the first sign of the depleting season opening ahead. Even within a single regimen, the practitioner reads the subtle turn of one season into the next.

The seasonal regimen is one of the most widely shared structures in the world's traditional medicines. The specific prescriptions differ by climate and culture, but the underlying conviction — that the body's needs shift with the turning year, and that health depends on adjusting food, activity, and conduct to the season — recurs across civilizations with striking consistency.

Traditional Chinese Medicine offers the closest structural parallel. The Huangdi Neijing (Suwen, chapter 2, "On Regulating the Spirit to the Four Seasons") prescribes a distinct regimen for each season and is emphatic about winter precisely as Vāgbhaṭa is: winter is the season of storage and conservation (associated with water and the kidneys), in which one sleeps early and rises late, keeps warm, guards against cold, and avoids depleting the body's stored reserves. The Daoist yangsheng (nourishing-life) tradition develops detailed seasonal practices on the same principle.

The Greek and Roman traditions carry the pattern through the Hippocratic On Airs, Waters, Places and the doctrine that the seasons shift the balance of the humors — cold and wet winter strengthening phlegm, requiring warming and drying foods in response. Galen's De Sanitate Tuenda (On the Preservation of Health) gives season-by-season dietetic and regimen adjustments that parallel the ṛtucaryā in both structure and reasoning.

The Unani Tibb tradition, descended from the Greek through Ibn Sīnā, develops the explicit tadbīr al-fuṣūl (regimen of the seasons): the Canon of Medicine prescribes warming, more nourishing food and protective warmth in winter and cooling, lighter regimens in summer, on the same humoral logic of matching intake to the season's effect on the temperament.

The Tibetan Sowa Rigpa tradition inherits the Āyurvedic ṛtucaryā almost directly, adapting the six-season scheme to the Tibetan climate and integrating it with the regulation of the three nyepa. Its winter teaching — heavier, warming, more nourishing food and the conservation of bodily heat — descends from the same source Vāgbhaṭa compresses here.

Modern chronobiology and seasonal physiology have begun to recover empirically what the seasonal regimens asserted: measurable seasonal shifts in metabolism, appetite, immune function, mood, and sleep architecture, and the value of aligning light exposure, eating, and activity with the season rather than holding a single year-round pattern. The classical claim — that the wise adjust how they live to the season the body is in — is increasingly supported at the level of contemporary evidence.

Stripped of its Sanskrit and its seventh-century North Indian specifics, the chapter offers a principle that survives any climate: the body is not the same across the year, and a life lived well is a life lived in time with the season. Strength, hunger, the capacity for exertion, the kind of food the body can build on — all of these move with the turning year, and the person who eats, works, rests, and protects themselves the same way in every season works against their own physiology in at least half of them.

The specific items are climate-bound. The charcoal-warmed chamber, the treading-massage, the particular winter foods of wheat, black gram, sugarcane, and milk reflect the technology and agriculture of classical India. The structural teaching survives translation: in the cold seasons the body's fire is strong and its surface sealed, so it can take — and needs — the heaviest, warmest, most building nourishment of the year, supported by warmth generated through oil, movement, bath, clothing, sun, and shelter; to eat lightly or expose oneself to cold in this season is not discipline but self-depletion. And the deeper teaching beneath the winter regimen is the one that governs the whole chapter: read which arc of the year you are in — the taking or the giving-back — and conserve or build accordingly.

The chapter also models a finer skill than rule-following: the reading of transitions. Late winter takes the same regimen as early winter, but intensified, because a new dryness has begun — the first sign of the depleting season ahead. The practitioner is taught not merely to follow a fixed seasonal table but to feel the turn of one season into the next and adjust before the new season fully arrives. This attention to the junctions is the living edge of the seasonal regimen, and it translates to any climate and any calendar.

For a reader today, the most directly usable part of this chapter is its winter teaching, and it can be implemented without any of the period-bound specifics. In the cold months, when appetite and digestive capacity are naturally higher, eat warm, cooked, unctuous, building food rather than reaching for the light raw fare that suits the heat — the body in winter can build on the heavier nourishment and is depleted by under-eating. Generate heat actively through oil massage (abhyaṅga) and vigorous movement rather than relying on shelter alone. Protect warmth through clothing, footwear, daylight sun exposure, and a warm home. Honor the long winter nights with earlier sleep and a later, hungry waking. None of this requires charcoal braziers or treading-massage; it requires only matching how one eats, moves, and rests to the season the body is in.

The broader principle is the one to carry year-round: notice which arc of the year you are in. In the depleting seasons — the high heat of summer especially — conserve: lighter food, gentler exertion, cooling and hydration, protection from the sun's drying force. In the restoring seasons — the cool that returns after the rains and deepens into winter — build: richer nourishment, more activity, the rebuilding of strength and tissue. A single fixed regimen held across the whole year will be wrong for the body in at least one of its arcs.

A practical caution: the chapter's winter emphasis on rich, sweet, unctuous, building food is calibrated to a body doing hard physical work in a cold climate with genuinely elevated winter agni. A modern sedentary winter, spent largely in heated indoor warmth, does not seal the body in or raise the fire the way the chapter assumes — so the winter license toward heavy sweet food is best moderated to one's actual cold exposure and activity, and adjusted to constitution (a kapha-predominant person in particular accumulates in the cold-and-damp seasons and needs less of the heavy-sweet, not more).

The spring (vasanta) regimen is now part of this reading — its logic of clearing the kapha the winter heaped up, and its weaving of bodily care together with the delights of the season. The regimens for summer, the rains, and autumn, each with its own logic of accumulation, aggravation, and pacification, continue the chapter and will be added as they are completed.

Chapter 3 is the seasonal layer that sits above the daily regimen of Chapter 2: the dinacaryā gives the shape of the day, the ṛtucaryā tunes it to the season. The following pages turn the chapter's teaching into the living containers where seasonal practice happens at Satyori.