What nine nights of dance costs your HPA axis

For years, I told people the exhaustion after a festival like Navratri was just 'social jetlag' and to power through it. I was wrong. The profound fatigue is not a sleep debt problem to be solved with an extra lie-in. Your entire physiological tempo has been re-written, and your body's internal clock is now playing the wrong song at the wrong time.

It’s the Tuesday after the last night of Garba. The house is quiet, but there’s a high-frequency buzz behind your eyes that extra-strong coffee won't touch. You made it through the school run on fumes, but now, staring at your inbox, the words blur. You feel hollowed out, irritable, and strangely alert. You are tired, but your body is still wired for a 10pm dance floor that no longer exists. This isn't the pleasant ache of a holiday well-spent. This is the flat, jarring static of a system that was running on emergency power and has just been unplugged.

Your cortisol curve is now inverted

Your body runs on a predictable 24-hour rhythm, an internal orchestra conducted by a master clock in your brain called the suprachiasmatic nucleus (SCN). Cortisol, the hormone of alertness and action, is meant to be the lead instrument. It should peak within an hour of you waking up, your body’s natural 'get up and go' signal that turns on your brain and gets your muscles ready for the day. From there, it should gradually decline, reaching its lowest point in the evening to allow the symphony to quiet down for sleep.

For nine days, you systematically taught your orchestra a new score. The late nights, bright lights, loud music, and social excitement acted as powerful time-givers, telling your SCN that the day now starts at 10pm. Your body, ever adaptable, learned to anticipate this. It started pushing its cortisol peak into the evening to give you the energy to dance. The result is an inverted curve: low, flat cortisol in the morning when you need to feel awake, and a lingering high in the evening when you need to wind down. That 'tired but wired' feeling is the signature of a mistimed hormonal rhythm.

Related anchors: sleep anchor · burnt-out anchor · wired-tired anchor

Your blood sugar is on a ghost train

The other part of this story is blood sugar. The nine nights of dancing were likely fuelled by nine nights of festival foods, often eaten late. Many traditional fasting foods are heavy on carbohydrates and sugar, which send your blood glucose soaring. Your body releases insulin to manage this, but its response is sluggish late at night when it expects to be resting. This leads to a dramatic overcorrection. Your blood sugar crashes a few hours later, jolting you awake around 3am with a surge of adrenaline and cortisol as your body scrambles to stabilise itself.

This nightly rollercoaster leaves your system depleted. You wake up feeling groggy and unrested, with an undercurrent of anxiety from the nocturnal stress response. You might also notice intense cravings for more sugar or caffeine the next day as your body tries to find a quick energy source. This creates a vicious cycle of unstable energy, poor sleep, and heightened stress, even after the festivities have ended. The feeling of being 'off' is a direct readout of this metabolic disruption.

Common Questions

How long until I feel normal again?

It takes about three to seven days to fully reset your rhythm if you are deliberate about it. Consistency is more important than intensity. Each day you follow a corrective protocol, you pull your internal clock back towards its natural setting.

Should I just sleep in to catch up?

No. Sleeping in late pushes your morning light exposure even later, confusing your master clock further. It's better to get up at a consistent, reasonable time, get immediate sunlight, and take a short nap in the early afternoon if you need it.

Is fasting during Navratri making this worse?

It depends on how you fast. The problem is not the fasting itself, but the common reliance on high-carbohydrate, high-sugar 'fasting-friendly' foods. This drives the blood sugar rollercoaster. Focusing on protein, healthy fats, and fibre, even within fasting rules, stabilises your energy.

Closing

Getting your body back on its own time requires a few deliberate, physical inputs this week.

Go deeper on the mechanisms of regulation in my foundational course, The Nervous System Tune-Up.
For a personalised roadmap to reset your system, book a one-on-one State reading.
Get the free guide to Anchoring Your Day with three non-negotiables for your morning rhythm.

TL;DR

The exhaustion after nine nights of a festival like Navratri is more than sleep debt. Your body's 24-hour cortisol rhythm has inverted, making you tired in the morning and wired at night. Late-night eating has dysregulated your blood sugar, causing 3am wake-ups and daytime fatigue. Recovery is about systematically re-anchoring your internal clock with morning light, front-loaded protein, and a consistent sleep schedule to teach your body the party is over.

Sources

Miller, G. E., Chen, E., & Zhou, E. S. (2007). If it goes up, must it come down? Chronic stress and the hypothalamic-pituitary-adrenocortical axis in humans. Psychological Bulletin, 133(1), 25–45.
Chandola, T., Brunner, E., & Marmot, M. (2008). Work stress and coronary heart disease: what are the mechanisms?. European heart journal, 29(5), 640-648.
Maslach, C., & Leiter, M. P. (2016). Understanding the burnout experience: recent research and its implications for psychiatry. World Psychiatry, 15(2), 103–111.