By Saveri Lal
Feeling wired but tired during a full Moon? Struggling with bloating during a stressful Saturn phase? These aren't just coincidences. They're cosmic cues. In the Vedic tradition, time is not linear but rhythmic: days, lunar fortnights, months, seasons and yugas are all nested cycles, governed by the movements of Sun, Moon and Planets. Vedic astronomy treats these cycles as carriers of "kala-shakti," the power of time that shapes events, tendencies and even lifespan.
At its heart, this tradition rests on a single observation that the human body is not separate from the cosmos; rather it is a microcosm of it. The same sun that drives the seasons drives our metabolism. The same moon that moves the ocean's tides moves the fluids within our bodies. The same patterns that govern dawn and dusk and the turning of the seasons are believed to echo inside the human body as rhythms. From this perspective, biological well-being and longevity are not just medical issues but questions of alignment and resonance with the cosmic order.
Each planet is associated with specific elements, bodily systems and energetic qualities. For example:
The sun governs vitality, the heart and the bones. In ayurvedic terms, it helps regulate agni, the digestive fire, supporting enzyme production and the body's ability to absorb essential minerals. It also affects our eyesight and clarity of vision, both physically and metaphorically. Sun is associated with strong immunity and leadership energy.
The moon rules the mind, emotions and bodily fluids. The moon's influence on our health runs deep—especially in how we process emotions, manage stress and maintain mental equilibrium. As one of the key luminaries, its cycles are closely tied to our internal tides, hormonal balance and the emotional mind.
Mars symbolises strength and courage, directly influencing muscles, blood circulation and physical vitality. It boosts stamina, endurance and immunity, often stepping in to support the body when the sun's energy feels low. A weak Mars may also lead to inflammation and stomach acidity.
Mercury governs the nervous system, communication and coordination, playing a key role in mental clarity, memory and learning, mental health, hormonal balance and skin condition.
Jupiter's influence extends to regulating cholesterol levels, managing fat tissue and growth. Jupiter inspires optimism, wisdom and a broad, open mindset that encourages a positive outlook.
Venus rules the reproductive system and kidneys; encourages self-expression, beauty and emotional connection. It plays a great role in supporting the body's natural capacity for self-healing and renewal.
Saturn governs bones, joints and spine, playing a crucial role in maintaining structural health and long-term vitality and brings patience, perseverance and resilience.
According to Upnishads, "As is the human body, so is the Cosmic body; as is the human mind, so is the Cosmic mind."
Circadian Rhythms (The Ancient Version)
Long before modern science mapped the suprachiasmatic nucleus (our internal clock), Vedic practitioners used Dinacharya (daily routine) to align with astronomical cycles. Ayurveda divides the 24-hour day into repeating phases governed by the three doṣas—Kapha, Pitta, and Vata; further links them to the Sun's position:
Early morning (roughly 6am to 10am) — It is kapha time, favouring stable, steady activity; suited for waking, gentle exercise, elimination and winding down.
Midday (roughly 10am to 2pm) — It is pitta time, when "fire" is strongest; midday is ideal for the main meal because digestive fire peaks with the Sun's height.
Late afternoon and pre-dawn (roughly 2pm to 6pm) — It is vata time, supporting mental activity, creativity, subtle perception but if misused, nervousness and insomnia.
Living with this solar rhythm includes:
- Waking before sunrise
- Meditating at Brahma Mahurat
- Eating the main meal at noon
- Sleeping by late evening is considered a primary way to protect digestion, mood stability, endocrine balance and hence long-term health
Fasts and light diets on particular tithis (lunar days) — Ekādaśī to stabilise the mind and purify the body