16/03/2026
Four days from now the spring equinox arrives. Most people will notice it is a nice day and carry on.
Here is what is actually happening in your body.
Since October your biology has been running in winter mode. Melatonin extended. Cortisol blunted. Mitochondria conserving rather than generating. Every day this week Norwich gains roughly four more minutes of daylight and your cells are registering that gradient before you have even looked at your phone.
This week, if you catch the morning light, something shifts. Cortisol sharpens. Serotonin picks up. Your immune system begins its seasonal recalibration. The master clock in your hypothalamus, a cluster of 20,000 neurons called the suprachiasmatic nucleus, has been building to this moment since January.
This is not wellness content. This is basic biology most people were never taught.
One thing to do right now: step outside within 30 minutes of waking. No sunglasses. Let the equinox light reach your eyes directly. Every morning this week.
Booking: https://link.msgsndr.com/sp/610876d69d0
Research: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4734149/