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The Orchestra

Sleep is not a switch. It's an ensemble.

Every night, your brain runs a precise biological choreography. Slow waves, spindles, and hippocampal ripples must couple in sequence for memories to consolidate. When your rhythms align — with each other and with the world — memory is protected. When they fragment, the cost is measurable. Turn the dials and watch it happen on the recording.

Polysomnogram · subject 001 · night 1
Wake Awake
11:00 PM
Circadian · — SW–spindle · — HRV · — Memory · —
Hypnogram — drag to scrub the night
WRN1N2N3
Memory replay — consolidation events
EEG C3–A2 (blue) · ECG Lead II (red)
10 mm/s · 7 µV/mm HR — bpm HRV (RMSSD) — ms CBT — °C

What's happening right now

live read of the recording

Circadian rhythm

Your biology has a clock
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The SCN in your hypothalamus tracks the light–dark cycle and drives your core body temperature curve. Drag to simulate misalignment — jet lag, late screens, shift work — and watch memory consolidation and HRV degrade above.

Hormonal cycle

Progesterone is a sleep aid
Day 20
Mid-luteal
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Allopregnanolone — a progesterone metabolite — potentiates GABA-A receptors, the same target as benzodiazepines. Mid-luteal nights carry naturally amplified spindles, a raised core temperature, and lower HRV. Menstruation fragments sleep. Drag and watch the hypnogram and traces respond.
Why this matters for you

Rhythms are individual. And they can be aligned.

The night you just played with was a model. The dials you moved are, in real life, set differently for every single person — which is why generic sleep advice so often misses.

Which brings me to the questions I spend my days exploring. How does the sleeping brain decide what to keep and what to let go? We all thrive when our internal rhythms are in harmony with the world around us — but life rarely plays to that beat. How can we help bring them back into alignment? And what role do dreams play while all of this unfolds?

If these questions are intriguing to you as well, keep going →