Photo By: Aditya Saxena
By Traciana Graves, Founder & Editor of Happiness 360®
What Sanskrit Knew About Your Internal Clock
In Sanskrit, the word sandhya means “junction” or “twilight”—the liminal moments when day turns to night, and night back to day. For centuries, Indian households have marked these transitions with daily sandhya rituals. At sunrise and sunset, families pause, often with gestures of reflection, breath, or movement. These are not elaborate religious ceremonies, though they may carry spiritual resonance. They are systematic ways of aligning the body with cycles of light, woven so deeply into daily rhythm that millions still practice circadian optimization without ever calling it science.
“उदिते सवितरि प्रातः, अस्तंयते च सायं।”
“At sunrise and sunset, one aligns with the sun.”
— Sanskrit verse
As a language scholar, I study how cultures embed wisdom into practice. This is the essence of what I call generational intelligence—knowledge preserved not in books, but in gestures repeated across lifetimes. Through my framework, Fearless Listening®, I pay attention to how societies solved universal human challenges in ways we are only now rediscovering. Sandhya is a clear example: a practice carrying circadian intelligence, but also emotional steadiness, spiritual grounding, and ecological awareness.
The Science of Light, Timing, and Mental Clarity
Your circadian rhythm is more than a sleep cycle. It governs cortisol, melatonin, temperature regulation, mood, and cognitive performance. When rhythms are disrupted, everything suffers—decision-making, creativity, immunity, emotional regulation.
Modern life erodes this alignment. We wake under artificial light, spend days indoors, and drown our eyes in screens after dark. The result is “social jet lag”—a life lived out of sync with biology.
Sandhya restores this by anchoring us to light’s transitions. Dawn rituals expose the body to east-facing light, triggering a healthy cortisol awakening response and setting the day’s rhythm. Sunset rituals reinforce melatonin release and prepare the nervous system for restorative sleep.
“The most effective sleep optimization may require nothing more sophisticated than paying attention to sunrise and sunset.”
— Traciana Graves
Neuroscience validates what Indian tradition carried: morning light improves sleep quality and mood, while evening light stabilizes melatonin. Dr. Andrew Huberman’s lab has shown that even ten minutes of dawn light strengthens the circadian rhythm. Sandhya typically involves 15–30 minutes at each transition—the perfect dose modern science prescribes.
Adapting Ancient Light Wisdom to Modern Life
Traditional sandhya practice: Wake before sunrise and face east for 20–30 minutes, often with breath or movement. At sunset, pause again for 20–30 minutes, reflecting on the day as darkness arrives.
The principles remain timeless:
- Consistent timing that respects nature’s rhythms.
- Direct exposure to light at liminal transitions.
- Ritualized attention that regulates both body and mind.
Modern adaptations are simple:
- Drink your coffee or tea beside an east-facing window.
- Step outside within an hour of waking.
- Take an evening walk at sunset; dim lights as night deepens.
- For shift workers, mimic sunrise/sunset using light therapy.
Consistency matters more than perfection. Linking exposure to everyday routines makes the practice sustainable.
Why Ancient Timing Beats Modern Sleep Hacks
Indian culture embedded circadian wisdom into daily rhythm, ensuring resilience across lifetimes rather than relying on apps or willpower. This is generational intelligence in action—knowledge refined by observation, transmitted through families, and sustained by repetition.
What’s remarkable is that Sandhya embodies multiple intelligences at once:
- Biological intelligence is achieved by aligning circadian rhythms.
- Emotional intelligence can be achieved by creating daily pauses for reflection.
- Spiritual intelligence reminds us of our place in larger cycles.
- Environmental intelligence, by syncing human life with the sky’s light.
- And of course, Generational intelligence, by carrying this practice across centuries.
This layered wisdom is what I seek to honor through Fearless Listening®—studying how cultures wove survival strategies into daily life. Entire societies solved problems we now over-engineer with technology.
For high achievers accustomed to patching fatigue with caffeine and apps, sandhya offers another model: sustaining clarity through alignment rather than forcing it.
The light, it turns out, was always the foundation. The sky itself carried the solution. What Sanskrit encoded in a single word, modern neuroscience is still learning to measure: the day begins and ends in the sun.
Fearless Listening® is the foundation of the Happiness 360® ecosystem—created for self-actualization, aligned leadership, creative living, and conscious connection.

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